How to beat Classic Mode?

Hey guys, I’ve been trying for a few months now to beat the Classic mode but i cant seem to figure it out, the max wave i reach is 120.

These are the Pokémons that I have. Is there like a special way to beat it or? Because I see everyone talking about using moves like protect and dragon dance and everything but i cant seem to comprehend how to use them efficiently so I go for power moves.

I’ll appreciate some tips, suggestions or whatever.

One final question: I dont find the option “endless run” is it only available once you finish the Classic? Thank you