I played while switching to QWERTY. But I was taking notes in another window in Russian, and coming back to the game, it was a bit annoying to realize I had to switch the layout back.
Adding AZERTY support would obviously make things better, but I’m afraid in my case it wouldn’t fix much, since I had issues with the ЙЦУКЕН layout.
At least in this jam, I only saw two other games that had issues with ЙЦУКЕН. I think the lack of problems is mainly because almost all of them were made either in Godot or Unity. And there, the engine itself handles that (though I can’t say for AZERTY, since I’ve never used it). And this game, as I understand it, is as custom-made as it gets.
Oh, by the way, one more note. Don’t use alert(). Every time I clicked Quit, terrible things happened.