What helps you not put too much pressure on dating?

I simply don't date, b/c I feel SO much PRESSURE. I feel I am not enough (I am working on it a lot). When you have PtSD plus an anxiety disorder that is a good part of your life, you don't exactly feel like men are going to jump to be with you. :( But, it also sucks NEVER, ever dating b/c of it. How can I just look at dating as not so serious and keep overthinking how a guy may leave me? I just want to feel relaxed and look at it as just a fun night, but it is so hard to do b/c I don't know if a guy wants something serious. I need to go slow, and I know many don't. HELP