I don’t trust anyone sexually

I’ve been doing some soul searching and realized, i can’t let go during intimate moments. I’m present but refraining because I don’t trust anyone. Things have happened in the past and I haven’t been treated the nicest nor have I had great sexual experiences. I want to start though, talk to my partners about the disconnect i feel(currently single). I’m not enjoying anything and i always feel used? Vs feeling like the person appreciates me and cares when they genuinely do. I’m in therapy currently, has anyone else experienced this? I just want to let go and enjoy sex!