Yeah well, fair enough. I think by moving the chin forward, you could make the most improvement. You have kind of a weak profile, making your nose look bigger, mostly due to recessed chin. Although, I must say, it's also due to your thin neck from profile and posture/lankyness. If you manage to build up mass, you would maybe gain confidence and if would make you look more impressive.
I wouldn't do anything with your nose aestethically. A good, prominent nose is a masculine feature. So except for maybe a slightly weak chin, everything else is more body/posture and just looking unhappy.
I don't know man, people are just nasty sometimes with comments etc. I don't see any problem with the long face from the front. It's okay from the front, profile is a bit more problematic. Long face isn't bad per se when the face has equal thirds, which is probably the case with you.