Does anyone else find it impossible to believe that someone could date/like them?

At this point, i legit can not comprehend someone else being able to like me romantically and cant wrap my mind at the possibility of it happening one day. I often feel as if i will never be attractive enough for someone to GENUINELY consider me. I always see so many people online say they want a 10/10 and calling even gorgeous women ugly. It makes me feel upset a lot of people will only consider you if you’re hot enough and it makes me struggle with body dysmorphia more.

Im 21 now yet have never had a bf or a guy be even slightly interested in me in real life. Yet i always see girls get flirted with/approached, which makes me feel like there’s something wrong with me.

Im wondering does anyone else feel the same way? Also how do you deal with this mentality?