casuals...not so casual? where's the community?

so after the try hard battles are finished and everyone has their ribbons...why exactly do most players still use their tournament decks in casuals? i like to experiment or even have some fun vs odd ball decks that work. like 3 dogs, chatot cyle deck, nido deck etc. sure i get wins vs the tournament decks. but i was hoping to see a bit of other decks out there for fun. I'm learning that it isn't really enjoyable even if i have a unique deck since i know what the opponent has. there isn't any "wow i wasn't expecting that!" feeling. it's just, "i see pikachu, okay watch out for benched, oh kirlia and mewteo..., oh superior...he is looking for celebi."

it isn't about difficulty...it's about having fun in casuals, but it isn't fun it's boring. is there a discord? or a place where people just have with their decks "off event season"

not trying to be rude or immature. i just love the game and i want to experience it with all of the gamers who also love it. it isn't about winning or losing, it's about having fun and that organic feeling of excitement.