Am I too late?

Is there someone who plays Honkai here?
If I start playing now, am I going to miss a lot of thing?

Given that MHY has moved on to Genshin as the new hot thing, I’m not sure why you’d deliberately choose the older title that’s no longer in the spotlight.

To be fair Genshin was the first Mhy game that I played, and only noticing Honkai recently.
I’m just looking for a new game to play, and still considering whether to play Honkai or not.

No worries. I believe Honkai will continue to be supported, just not as much as Genshin.