Sudo apt install librewolf
Sudo apt install flatpak
Flatpak install librewolf
If that doesn’t work then I recommend you try just installing it from your package manager of choice
But if that doesn’t work then I don’t know what else I can do for you mate. Firefox broke on my version of Linux mint just uninstalled it and used unchromeium Linux and it’s subsequent distros can be quite weird at times
That sucks M8 I saw the news for the Nintendo switch discounting support shame really would’ve loved to browse twitter on my switch while I chill in bed maybe listen to some chill music