Roblox for Linux not working

I know that Roblox is made for Windows, but I didn't want to spend time installing it on my PC that already runs Linux perfectly fine. I did some research and found that I needed to install something called Grapejuice (for Wine) to run Roblox. It's installed and everything, but I still can't play.

If I try to launch from the browser, it just throws the "You're almost ready to play, install Roblox here" junk.

If I launch the installed app, it loads, but when I try to log in, it tells me "an unexpected error occurred, try again later."

What did I do wrong?

Note: I don't currently have access to my PC right now, so I can't provide any commands, files, or computer specifications; I also don't remember the site I visited to install Grapejuice.