I'm going to sabotage any opportunity for relationships
Do you want to be single forever, why?
Being single is cool and fun. Why would I want to change my life that much?
You don't have to be in a relationship. So then if you are single, don't start romantic relationships with others. That way you can avoid sabotage and hurting others.
My goal is to make other people think I'm attractive and available. Flirting is okay but that's where it ends for me.  I'm not trying to be a bad person.
That sounds like you crave attention and nothing else. If you continue on this route then eventually you will feel very lonely and not have anyone as your life long partner to help you get through the day.