Never dated

I (22f) have never dated anyone. And I don’t know if I’m the problem. I have never dated anyone or done anything physical with anyone. I In Hs I never had anyone interested in me and when I graduated same thing in college. I have always been on the bigger size but try to maintain a healthy lifestyle and it’s not like big girls can’t find someone bc I know many who have. I have tried dating apps,making sure I look nice when I go out, I’m go out every week but do go out a couple times a month and yet nothing happens. I don’t know anyone who has been in my position. My friends all have experience in dating. I don’t know if it’s me or my looks and I’m just getting a little frustrated.