Search Results: letting me know that he has a girlfriend

Hello, I am 17 years old and about to turn 18 in April. So, I never had a girlfriend (like literally ever; not even a fling). I've been trying to find one for 9 months and it has not been working out at all. I've been rejected about 7 or 8 times now. I tried out dating apps and I fucking despise them because they're unfair for guys. Lately, I've been sliding in girls DM's and I noticed the girls are not as picky. I was talking to this one girl and I got rejected by her because our interests didn't match up, but the physical attraction was there. Lately, I've been thinking that sliding in girls DM's won't work forever. So, I thought about it some more and I thought "If I slide in a girls DM'S, they might already have tinder or whatever app downloaded and why would they settle for me when they can get a dude way more attractive than me". Lately, I've come to a conclusion about me just calling it quits and hanging up the towel. One of my friends have already called it quits for dating. Like with these apps and women's crazy standards, it seems like a very good option to go for. One of my friends is telling me to don't quit. I just don't know what to do. I think that I'm ugly because I used to be made fun of for my face back in middle school. From boys and girls. I Remember one time, one kid looked at my face and said "Dude! What the fuck is wrong with your face?". In college, I noticed one time this girl was trying to avoid me. I don't know because it was my face or not. I did a rate me from 1-10 with 3 girls, one of them gave me a 5, 2nd gave me a 7, and the last one gave me an 8.5. I even thought about when I quit, I just thought about just letting myself to go. I want to bulk up and not worry about being fat. I want to pack on some muscle and get bigger. Should I stop dating and let myself go? If you think I shouldn't, where am I supposed to meet girls?