do you know any deck ideas to counter charizard

If talking about specific cards, TM Devolution, Teal Mask Ogerpon ex or other decent damage grass attacker depends of the deck you are playing.

Regarding decks, Chien-Pao ex with Hands ex it's a pretty difficult matchup for Charizard ex, because of the high damage output and the possible bench snip with radiant greninja.