I won't go into a long explanation, but I'm an Aspie, so relating to other people and understanding emotions and social norms is not in my wheelhouse. I don't understand my ow emotions, ad other peoples' emotions are just a total mystery to me. I've tried and tried, and tried to get help, but in the end, the best result is for me to be a loner. Maybe that's the term that suits me best - loner. I don't know. It doesn't matter.
I am a highly introspective introvert that loves reading people. I have a knack for it. I have a knack for some aspects of psychology. I love figuring out how people work, why they do what they do. And that includes myself. I've been seeing a counselor for 3 years now. I can be sympathetic and empathetic, though i rarely show that side to others.
Guess what. I don't understand my own emotions either. I am constantly confused by myself and some of the things i do. And some things i've spent 20 years trying to understand just to finally begin to have some light shed on them.
And having Aspergers doesn't require you to be a loner. Yes, there are some things you may never understand in regards to these areas. But it's a cop out to say 'i'm a loner'. What that really means is 'it's too hard and i'm too afraid to find another way around this'.
You could start out by having a pre-scripted explanation of what it's like to be friends with you, or to interact with you, and why it will be that way. That way, if things start going badly, you can have this ready to help people understand and be more patient about things with you.
You can still learn what sorts of things are viewed negatively in social norms, so that, even if you can't understand it, you can know that it is something that won't go over well, and not say it or do it.
I'm not trying to make it sound like i have all the answers or can entirely understand what you're going through. I don't know everything you've tried already. I'm just trying to encourage you to not give up and close up, but to seek ways that can be tailored to you, that could be helpful. You may not ever have the capacity to understand your own feelings, or that of others, but that doesn't mean you go hide under a rock. If you really want it, you'll push through.
I've had depression since i was 14. I've had times of severe depression. But during those times i managed to go to a job, even though all i wanted to do was wallow in a dark room on a bed and mull over how horrible life was. I just went to work and did it instead haha. I've had times i wanted to die. Where i felt hopeless. I still get like that now. But every day i wake up and face the day. Most days i come on here and try to help at least one person, even though i can't see the good in myself or my own life. And i have a lot to be depressed about, i don't need to have a chemical imbalance. But i have both. And i'm still here. And i've stuck with God, even if some days it was by a thread.
If someone like me can persist, then there's no reason for you to give up either. We both have things in our lives that can hold us back. And while my life may not be what it could or i wish it was, i'm still here and pushing on. So why not give up the loner shtick and start using that intelligence that people with Aspergers are known for having, and come up with some ways for you to make things in your life better?