I was recently wiping data out of one of my disks intending to sell it. There was a windows system installed there, which I wanted to get rid off anyway, so I let the process run while I was taking a nap. When I woke up and restarted the system I was very surprised to see that now my Linux system is missing and nothing works anymore except BIOS. Turns out I deleted my bootloader. I managed to fix it but It was stressful as hell (remember to backup your system, I didn't).
Weird things can happen during dual booting but it's all a life lesson, a lot of fuckery especially with windows, which likes to mess things up.
Yeah, they are doing everything they can to fix that mess, but there are some things that are impossible to fix. Mozilla kinda sucks now, but the alternatives suck even more so I'm staying with Librewolf, for now