Back after hiatus- thank you! Law of attraction and changing reputation toxicity

Anon, Tallspicy and all the rest. It’ll be a rant before I ask a question. We’re here often to rant anyway. You were the best. Giving advice but not OTT criticism (I was already embarrassed). It turned out that you were right – anxious attachment style when triggered. I gave up dating, what a relief. Found a male friend in whom I confided. Unfortunately, later on he turned out to be a manipulative, angry person who tried to diminish me, make me feel isolated and bad, nitpicking and GASLIGHTING. Slowly but too quickly since I caught what he was up to. Anyway, I was both a victim and abuser (I mean I chased guys who didn’t want me, so I have to admit my fault) in dating life but my ex was a narcissist and it started a pattern. I no longer feel I’m crazy, obsessed. I also give guys/people one chance even as a friend and if they blow it I’m done. I was manipulated for quite some time and was also missing something that wasn’t real. Some guys really do like play games.
But having said that..
I need to apply the law of attraction to my life, not just guys but it’s a dating forum so.. I want to channel energy and give off good vibes. I want to change my attitude. Not worry if I’m good enough, if I said something stupid. How do you start? Also because of past mistakes I have some common friends with people I meet. I worry what they hear about me. Should I mention something or act like nothing happened? (I’m scared of confrontation).
Anyway, I’m obviously working on myself, getting a bit sad when someone good on paper doesn’t notice me, some almost stranger is impolite, often don’t guys who like me back but I’m ok with being single.