I've always wondered what life would be like if I were attractive. When I worked in retail, there was this one lady who was model-level beautiful and one day, I was on the rota to work with her. It made me feel even more crap- with the extra contrast standing next to her.
She was actually really nice, which made it easier. Customers would outright tell her she was beautiful and had she considered modelling. I asked her afterwards what that was like- and she said- sometimes it was flattering but other times, it was really intrusive. Wondered if it would almost be like being famous and decided I was probably better off being ugly. I don't think I'd enjoy that level of attention.
I'm sorry that this is impacting your life. I would say that there are things you can do to improve yourself. I went through a two year phase of trying to impress someone I had a crush on. I lost a lot of weight and made more effort dressing well. Honestly, it didn't work- LOL. Still, it made me feel better at the time. Honestly, I've realised since that all my crushes were pretty unhealthy- like obsessions (limerance).
I think I'm so maladjusted now that I don't even want a relationship, so it doesn't matter so much how look but I wish you well.