Stipefoarum foar Firefox

Ive been using FireFox for a while and think its great but FireFox suddenly stopped working for me even though I use it everyday just fine. The search bar works but literally nothing else works. Its very annoying and I do not know what to do. Someone please help me fix it. I use windows 11 on a HP computer, I do have a lot of extensions but absolutely nothing works so I cant check. Nothing I try will work. I cant list the extensions I have because it’s completely blank and glitched. I hope it isn’t a severe problem. Please give me some advice!

I had a service provider in Montreal Quebec citenet.net , My firefoxe account was with them , I would like to move my account using my google email on an other internet service provider in ste-Marguerite du Lac Masson Quebec how can I do that ?

I made the mistake to sign into my Firefox account at work and all my personal bookmarks got replaced by my work bookmarks. now when i sign in into my account at my house, i can only see my work bookmarks. how do i recover my personal bookmarks? thank you

An automatic update of Firefox which resulted in a "quit/create new profile" choice has removed all my bookmarks

Of the four profiles stored in "about:profile" three are identical (ie. have only the default bookmarks stored) and one, generates a "quit/create new profile" message.

The "bookmarksbackup" folder (in /home/user/.Mozilla/Firefox/zs1jki8t.default) is empty.

The "import/backup" option (in Manage Bookmarks) offers nothing to choose. There is no 'list of dated automatic backups.'

Firefox did not create an "Old Firefox Data" folder on the desktop.

Browser privacy "strict". "Never remember history" was selected.

Running Firefox in Manjaro (Linux)

Help.

When visiting sites such as the Russian Wikipedia, characters that are in the Cyrillic Times New Roman font display as blocks (shown in image). Safari does not have this problem.

Please let me know how I can get my old bookmarks as I do not have any on file in the restore area the only ones I have are five teen year old ones, Can you please help me restore them to the my original ones?