Being an ugly woman is exhausting.
I’ve dated women most people considered ugly and been very happy with the relationships. Personality goes a long way. So do shared interests. For women, appearance-wise most men care that you’re not obese more than looks. (And trust me on this — most men will never tell you. I will and in fact am.) You can amp your looks greatly in most men’s eyes by maintaining a normal BMI. (That she said she lacks curves implies she is already likely slim, though.)
And some men like big noses. I know because I am one of them! And some men also like fairly masculine women. Again, I am also one who does.
This sounds to me more like depression or perhaps just hanging with the wrong crowd or some combination of both; some people enjoy going out of their way to tell you how terrible and unattractive you are. I know that very well indeed because I grew up in North Florida.
Move on, hang in a better crowd and find someone who likes the you that is you — but there is also nothing wrong with tweaking your looks within reason to get the results you want.