Lose all passwords & sometimes my bookmarks on desktop firefox . Android phone still has them all. Afraid to sync, in case erases all on phone!

I recovered them once by choosing a different default profile. Then the next time I opened Firefox both the saved profiles had no passwords. I can find the referred files on the desktop, but don't see real steps on what to do with them, and if they're the ones in the now password list-less profiles they will be useless anyway. I really don't know what to do. It seems every time I open Firefox it updates and half the time I lose all my bookmarks, all the time I have no passwords. Right now I have bookmarks but no passwords on the desktop. I have everything on the Android phone only. I'm on Windows 10 still on the desktop, but my windows 11 surface pro 8 now seems to have lost passwords, too! Is there a way to download and not lose anything, then import back to desktops? I'm afraid to sync, in case the desktop takes precedence and erases all my passwords on my phone!