I also like simple-ish puzzle games. Among favourites are Monument Valley, LEGO Builder's Journey, and Superliminal.
I also really enjoy games like Firewatch, The Stanley Parable and The Beginners Guide.
But I'm kinda open to anything as long as it's not too stressful or too complicated. As for platforms, I have Xbox and iPad, but I can also (sometimes) borrow my wife's PC or Nintendo Switch. (I mostly don't find PCs relaxing to game with tho.)