I empathize with your hurt. I too have been hurt deeply by other Christians in the body over the years. There are many reasons why people act the way they do which include they themself were mistreated and learned the behavior, a lack of Christian modeling or even a dysfunctional upbringing growing up, a lack of immaturity, a lack of empathy, not understanding how much God loves the people they hurt, they like the power and control, they have a sadististic streak, they lack self-control, etc... etc... etc... there are many reasons but the number of reasons are finite. There is not an infinite number of reasons.
Ask yourself are you letting them continue to hurt you? Are you in a codependent relationship with them? They can only hurt you to the extent you allow them to. I found that setting healthy boundaries with those I could tolerate that had this behavior worked and I simply renegotiated our relationship and held them accountable for their words and behavior. The ones that wouldn't respect my healthy boundaries either left or I left and they are no longer a problem with regards to my life. I then inventoried everything and gave it to the Lord. I forgave them and left it behind me. I poured out my glass of bitterness, hurt, and unforgiveness and filled it up with God Himself
. No more problems.
Just as an aside, correcting something in love (such as a false teaching or a negative behavior in someone you love) is not the same thing. You can love those in cults and out of love and a responsibility to scripture correct them while loving them deeply.
Seek out friends whose words and behavior are safe. That's my advice. Peace and God bless YOU!