It could be an issue on you computer’s side since I haven’t experienced anything like it recently. Make sure your Roblox is up to date and that your specs aren’t terrible. Also make sure that your computer is 64-bit and not 32-bit.
I mean I could play Roblox without any crashing but one day it started to crash so I don’t think it is my computer and I think my computer is 64-bit soo ye…