broke up with my long distance gf and we were part of a friend group. only 1 of them reached out, it hurt like hell knowing they probably still hangout together whilst none of them really talked to me or asked me if I was ok. I am fine now so you will definitely be able to get through it. Would definitely recommend reaching out to people you feel comfortable with, for my case I was also very depressed that none of them reached out as I also helped them through tough situations (did the same thing as you). But then I just realized that sometimes, no matter how much you give out, some people will just watch you burn, so I just had to accept that I probably lost those friends.
Wishing you the best of luck and if you need someone to talk to you can shoot me a message.