This place is filled with groomers, so it may not be best for you

Sounds like a therapist would be the best option. SW is good for venting, but to actually solve your over-trusting issue is going to require a professional

Local charities are always a good bet for free therapy. Checking your local council website (or however it works where you're from) is also helpful because it'll give you options of what youre eligible for in terms of resources.

You've been dealt with some difficult cards, and responding the way you have is a normal human reaction. The first step is showing up for yourself, don't give into the narrative other people have set for you

Time to see a counselor who can teach you how to grow a spine. It's called self-empowerment. Take back your own life. Take charge of your own soul.

Sounds like you need to be handled with care. There are all sorts of pieces of advice I could give, but others will get to them. Finding people you can trust, setting boundaries, etc. But despite that, it it just sounds like you're miserable and need to be treated better.

That is so screwed up!!

Talk to a teacher, or parent of a trusted friend.