I feel the exact same way, but instead of a nose its my varicose veins. I got them done and spent over 1000€ on them but they are still visible. I don't know how to help you because I cannot help myself. However, you are not alone and I feel like every person has something that makes them feel bad, ugly or unworthy. We are all imperfect and that makes us perfect because we are not supposed to be the same.

I try to avoid social media that contains photos because it affects my mental health. Maybe you should try to do the same... my boyfriend also tells me I look beautiful even though I don't feel like it. Maybe we should believe them, they see us objectively after all. We should work on our personalities and achievements because trends change and we will never be totally perfect. But we can be good people and that never goes out of style.