I need advice...asap😔

i’ve been dating this boy for close to 8 months now...he broke up with my around 6 and then we got back together a few weeks later. the first time we broke up, was because he couldn’t handle not being able to see me everyday, however, before he called it off, he spent about 2 weeks not answering me and if he did, it would be “sorry. goodnight” or something along those lines. very short, dry, and you could tell he wasn’t interested anymore! he went from facetiming me every night to not doing it at all. he called it off after two weeks and he missed me a lot and proved that he changed and so he got back together with me a few weeks later. it’s been about a month i guess and things were better until 3 days ago...he got back into the old cycle of where he’d ghost me...and not call me...i know something is bound to happen again aka being broken up with again. i’m trying to prepare myself now but i really don’t feel worth it. he was the only person i really had anymore because everyone else left my life rather they were a close friend or just a friend. my best friend leaves me for her boyfriend and now i sit in my room and write music and sing because i have no other way to cope with my feelings/express myself. i feel like i don’t mean anything to anyone. and trust me, i’m such a positive person! and i really do keep my head up, it’s just kind of getting rough right now because of problems that i was already currently facing along with my toxic ass boyfriend. please help🥺. i need encouragement, advice, or something. i’m sorry if i’m a burden on any one of you, it’s just this is really hard for me 😔. i swear this is all i ever deal with anytime i finally get happy again...and it sucks. it’s like it never stays good.