How is "no self" (Anatta) supposed to be a helpful?

Made a thread that was sorta related on here: Does Teleonomic Matter imply Subjectivity without Identity? Triggered again by this answer: https://philosophy.stackexchange.com/a/78860/88743 and I was sorta triggered further when I read this comic: https://existentialcomics.com/comic/1 By the way I wouldn't recommend reading the comic, might not sleep tonight. But anyway, I've read Buddhism, attended some of the teachings from monks, and talked to Buddhists and the concept that always eluded me was no-self (attachment also but that's something else). I never really understood how it was supposed to be a good thing. That there is no enduring, unchanging essence that we can call me or "I", it's just a collection of causes and effects that is constantly in flux. It's "death" and "rebirth" in a metaphorical sense. To me it sounds like loosing so much that makes us human. No friends because there is no one you are friends with (even if you have friends), you aren't falling in love with someone because there is no "one" you are falling in love with. I can't really say "I like this" or "I wanna do this for a living" because that's not a permanent part of me, can't feel good or proud about myself when I achieve something because there is no one to feel that or celebrate, etc etc. Is it wrong to feel sad if my dog or dad dies because no "one" died? Am I even alive? It's something I try to avoid thinking about because when I listen to it and just view people as a collection of causes and aggregates I just stop caring about them, I can't really explain it. When I see myself like that my emotions just shut off for some reason. So with all that said I'm wondering how this is supposed to be beneficial for someone, let alone society (which I assume is the goal for Buddhism), because so far it's just hurt me and held me back from doing things in life rather than liberating me like they said. IMO Buddhism just feels like a religion that says everything I think and do is wrong, but I digress. I really need help with getting this because it's haunted me for years.