the internet is not your friend, but a kind of alien intelligence - vast, cool, and unsympathetic, in HG Wells' formulation. Publicly melting down (even anonymously) is not going to help you; if anything, you'll just end up feeling more isolated.
You need to work out your self-image issues with a person instead of projecting them onto your environment. That person might be a friend of therapist, or several people helping you with different things, and finding the right person(s) is likely to involve several false starts and blind alleys. You should pursue this work in person. Parasocial relationships are a necessity in this day and age, but over-reliance on them is ver bad for your mental health.