Probably google dance

Its been 2 months since my multi-niche site serps dropped from 1-3 google page to the last ones.
Its not google penalty because I can see my site when I type keyword but I can't be 100% sure that's google dance because of the long period of time.

Is anyone facing the same problem?

Any tips on how to make my site rank or " move from google dance " ?

Google dance usually lasts around a week.

I agree. If it was only Google dance, it would have lasted around a week. 2 weeks would already be long. You could have been hit by an update.