@Natty152235,
Agreed, Calamity Jane.
OP: why, exactly, is every reason you're giving an excuse to tear
yourself down? Your self-esteem is in the trash. Get some counseling to work on yourself so you can feel better about yourself. And stop saying you're unfit. Unless you're in active mourning for the recently deceased love of your life, you're fit for a relationship.
If you didn't want one with him, then you should not have given him your number. The first time he asked you to be in a relationship was your first clue that he didn't want to just be pals. That was the time to be firm and tell him sorry, this isn't working out, and then losing his number and potentially blocking him. In the moment, he would've likely been angry but it would have been for the best.
Don't. String. People. Along.