Why cant I get a boyfriend? Any tips?

Posting on here because unfortunately people in my life are at a loss to give me any answers or give me anything productive :(

People make comments towards me saying ‘How on earth does someone like you not have a boyfriend?’. Going by what others close to me have told me is that I’m very intelligent, funny, caring and very good looking. In just the last two weeks I’ve had two guys approach me literally on the street asking to take me out (I wasn’t attracted though). Somehow, I’ve been single for almost four years since my last relationship that ended really badly. I’ve asked some good guy friends why they think I cant get a boyfriend and they are at a loss, cant believe that the guys I rarely do like don’t make a move, or lose interest after the first date. I keep asking: what is wrong with me if I am all these things yet its not enough? I’ve been involved with average guys, extremely handsome guys, a rich guy, an older guy, younger guy yet no combination seems to work! So that leads me to ask for any tips from anyone in a similar situation or advice particularly from guys….

Just recently I had a good first date(first date in the past year!) with a very intelligent guy with model good looks, easy to talk to and was potential. The ending of the date was awkward but we acknowledged it in our follow up messages and he asked twice in one week to see me again. Our plans fell through on the weekend (he was busy with study and warned me it could happen) but since then (4 days ago) he hasn’t replied to my text. Just disappeared and I can’t understand how he would go from wanting to see me again to no interest in a matter of days. I assure you I did try with this guy, making sure I didn’t come across as desperate, needy, uninterested etc. Obviously my self esteem has taken a huge hit after this. It could be my choice in men or it could be I’m not cut out for dating full stop. I don’t need a boyfriend but I want one and one that is right for me. I want to feel loved and have affection. Can’t remember the last time anyone really hugged me. Any thoughts on how to change my situation would be greatly appreciated….