Magic the Gathering. It's a card game from the company that bought D&D from TSR. You'd like it, I think! You play a wizard who travels between dimensions and with your card deck that you build over time, you battle with spells, artifacts, summoning creatures, things like that. I'll teach you how to play sometime!
Then yeah, it's a huge adjustment. It's okay to feel your feelings. I stole that from my therapist, but it's still true.