Although it is not easy to be born beautiful, what does it matter if you are not beautiful? Nobody's arresting you. There are many stars who are not beautiful. Don't blame everything on your bad looks. Of course, there are people in society who judge people by their appearances, which is not the reason for plastic surgery.
Don't go to extremes. You said that you need plastic surgery in the case of physical defects. What everyone said is that ugliness and physical defects are two different things in general.