It’s not really a situation where you can look for alternatives. Either the friends/celebrities/politicians/comedians/brands/etc you like are there or not. It’s gotten significantly worse, but Twitter is still the only place you can go to search for something that’s happening in realtime. Other alternatives have been able to create small niches, but X is the only one with a global scale.
(That being said, yes, I agree that Elon is doing everything he can to ruin that)