There are soo many things that happened with me. That I stopped trusting people? Is it happened with u too? How to overcome this?

When I was small , I trusted people a lot who are close to me but most of them betrayed me and left me alone in my dark phase so that's how I got abandonment issues , trauma and mental issues. I never left them in their dark phase, I was there by their side but they did so easily once their work is done.
But now things changed I got new friends but still I can't trust them , can't openly talk to them, and it's creating problem. They think that I'm not interested but I'm but it's just that it's hard for me to get close to someone and that's why I can't make close friends or can't even date someone. Also it's really difficult for me to express emotions I don't know why.
There are soo many things that happened with me. That I stopped trusting people? Is it happened with u too? How to overcome this?
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