is there a trick to evolve charcadet?

the armour comes from a guy in zapapico who swaps it for bronzor fragments (auspicious, scarlet) or sinistea chips (malicious, violet). so if you're short, it's bronzor or sinistea you want to be beating, not charcadet.

no trick with levels, it won't evolve no matter how high you get it. charcadet needs an armor item used on it: auspicious armor gives armarouge, malicious armor gives ceruledge. which one you can get depends on whether you're on scarlet or violet, so if you want the other one the simple route is trading with someone on the opposite version.