And I don't plan to switch back either. Everything is just better on Linux for me

i play roblox through vinegar all the time and it works perfectly out of the box

I use Grapejuice. It's a simple flatpak that I can install and it just works. You just need to go into its settings and choose between Vulkan, D3D11 or something else if the performance isn't good.

EDIT: just found out about Vinegar, I'll try it later. Apparently it's better than Grapejuice

EDIT 2: the game doesn't launch with it even after following the troubleshooting instructions, so if this doesn't work for you use Grapejuice

I play along with my kid using Grape juice, was a bit fiddly to get cooperative but after a reboot it works consistently for me on Deb 12 through Flatpak/Flathub.