Look, I'd like to give you an advice about depression. It comes from a psychology teacher, textbook, and conversations with doctors. Not a psychologist myself.
Whether you believe psychiatric problems come from demonic influence as some could tell you here, or unbalanced chemistry, looking at it either way is a good way to understand how it works.
When your brain experiences emotions, in a regular situation, it constantly changes in chemistry throughout the day, being the corresponding chemistry to happy, angry, sad, and other things, which changes to your environment throught the day, you might wake up and something makes you happy, later, you might have something upset you, later you might feel better and something makes you sad, and you could find a way to be happy by bedtime.
When something part of the body is responsible for regulating things such as the brain. It operates on a simple function system which is, adapt everything for survival. When an event occurs which is upsetting, and does not get resolved, you can become sad for a period of days. When this happens, your brain, adapting constantly, notices, being sad, you survive. After a long period of the exposure to the maintained brain chemistry associated with sadness, the brain determines being sad as favoring your survival, because constantly being sad, is the most recent way it figures you are surviving while doing. This is where we start calling sadness, depression a mental problem. If it continues long enough, your brain will fight a change in your emotions from happening, favoring sadness, because it figures while unable to understand cause and affect, it is helping you survive by being sad, whether there is a cause of it or not. This is where some people will tell you you become a target for lying demons, to product this happening, but for now we only should worry about what's happening in the brain. Insisting the sadness and depression continue as a survival tactic learned by the body, the brain will focus on thoughts which promote it. This is why people with depression find themselves thinking about depressing things even if they try to stop. the brain is trying to reinforce this new-found depression as what it thinks is necessary for survival and every moment continued with this brain chemistry of sadness is reinforcing this for the brain thinking it is necessary for survival. The longer this goes, the more the brain will try to reinforce this belief, and if it gets to the point where there's no reason to give to make you more depressed, the brain gives reason by it's ability to pretend it is responding to a certain stimulus in the environment. You sit there and feel like things are happening which are saddening when they're not, for a lot of people, it is thinking people around you are having hurtful thoughts toward you, thinking people have extra meanings in their actions which are against you, thinking things are arranged to not favor you, which in some cases they are, but who would construct an entire conspiracy against you, every situation, or misinterpreting people's tone of voices. If this continues unaddressed, the brain can work itself to a point where it makes up experiences to make you believe you should be sad, hearing somebody say something no body said, or making up examples which did not actually occur, sometimes dreams you have which you recall awake and wonder when they happened, not sure it was a dream.
This is the cause of depression with psychotic features, there is a home cure and a medical attempted cure.
The home cure is the basic blueprint of any treatment. In order to get your brain to recognize it does not need to be sad to survive, you need to induce other states of brain chemistry through emotions to reteach the brain it can survive without sadness.
This means going out and doing activities which will make you happy, or any other emotion than sadness and depression, allows your brain to experience functioning under different brain chemistries and learn slowly no one is needed to survive. It is important to remember without reason your brain will recognize trying to be put in a better mood as potentially lethal until it gets used to functioning under various ways, so when in the presence of something to put you in a good mood, your brain will automatically start trying to fill you full of thoughts which promote depression even though you are trying to promote happiness.
The sooner you can learn to treat this like an automatic function of the body, the sooner you will be able to recognize these feelings and thoughts come from your body which is not as important as teaching your body not to create these feelings, and you can ignore them with more comfort. You have to stick with what you use to help put you in a better mood until you can actually say you feel "happy" or something not sadness or depressed, or each time you will fail to have changed your brain chemistry structure, and maintain it for as long as possible. Only legitimate feelings of happiness mean a different chemistry. Nothing can fake it. Doing this altering mood is necessary as often and for as long as possible, to adjust the brain to a new way of thinking. Each new experience of better emotions detracts the momentum of the depression, and the more incidences you have of other emotions, the more the brain learns to believe they can also help in surviving, and the less oppressing it is about maintaining depression. This can eventually lead you being back in a state where your moods change on your environment and your brain is okay with it, original.
Medicines are the medicinal approach to the problem, they are used to force your brain into different brain chemistries, attempt to make your brain unable to feel depressed with the influence of drugs. They are meant only for when you can't put yourself in a better mood yourself, so you would have to use a chemical to induce a state of different brain chemistry where something in your environment could not. You should still seek happiness primarily through what is around you, but addition of meds could be required until can make yourself in a better mood without chemical forcing. The reason they are dangerous and a last resort, is because they have other effects as well and can cause dependency on them, meaning you do not get any worthwhile good feelings from the environment without them, and are dependent on them for their effects to feel good, and are not making any progress in teaching your brain to seek other emotions yourself, but simply taking the medicine and not trying to make yourself feel good also, some of them also lead to withdrawal, which can worsen mood and stand to detriment your progress.
Thought you could use hearing this, according to my old psychology teacher, this is the kind of talk you don't tell the patient to keep him as a customer.
You may, if there was phrases here you don't get which made this hard to read, want to copy and store this for a day you might be able to understand this better perhaps in a file, since your a 13 year old, get rid of it if you ever become not depressed
friendinpeace.