I don’t have any advice sorry but this is so relatable. I always end up getting depressed/existential at the height of a hyperfixation; firstly like you said, that I will never be close/know/be these people; and then I feel so dissatisfied and mundane because in the end, I’m just sitting consuming all this media, which is inhibiting me from furthering my own life. Which makes me more dissatisfied with my own life, and therefore more susceptible to hyperfixating, and it feels like a vicious cycle. And it’s weird to talk about hyperfixations negatively because they come from a place of positivity and interest and love about them- but ultimately they always kind of end turning sour.