hi, 24/f here and I totally relate. first off, im sorry that his family and friends seem to be huge dickheads. here's some advice from a stranger who went thru something similar 3 years ago:

get to know yourself. find a new hobby, or a new group of friends. (I chose to pick up culinary and am learning to cook!) anything to keep your mind busy. dont ask yourself what went wrong or if you could have changed anything; dont do that to yourself.

I know it's tough getting out of a long term relationship and everything is gonna suck at first; but give it time. as cliche as it sounds, time heals all wounds.

it's absolutely okay to be upset for a while, but dont let it consume you. take this ending of a relationship and look at it as a beginning of the next chapter in your life. most importantly, love yourself. you deserve to be happy and you WILL get thru this because you're a strong person. it's already been 6 months and you've made it!

i would take a nice hot shower and cry it all out, curl up in the blankets with a heating pad, turn on Netflix and be your own best friend for a while. block him on social media and move on. he's not worth being upset over because he didn't seem to care much at all. think of it as a blessing in disguise. I wish you all the best and my inbox is open if you need a shoulder to cry on.