What palace are you on or have beaten?

mementos

Honestly, you don't need to be the average level, I've been fine, its just people grinding. If anything just try to be a couple levels underneath it. If you go through palace fighting every enemy, you should be fine.

Use buf-

Oh wait you're playing the easier series.


Umm just remember to not get your weakness hit?

Forgot to add, recent palace I beat was Okumura.

Should still use buffs. Especially considering one of the later bosses will debuff the shit out of you whenever he can

Go through mementos, it'll help you level up and get some better items here and there