May Firefox app update a disaster. Nothing loads/ many log ins, like microsoft or facebook no longer possible

May 2026 Firefox app update has been a disaster for me. Nothing loads, and many log ins, like microsoft or facebook no longer possible. Too many new features take too much data and just never load anymore. Eventhough I set it to delete history on exit, because it saves long lists of history anyway, slowing or stopping all. Password manager suddenly has bern giving the wrong passwords, (suggested ones instead of my registered ones?), so I got logged out of my microsoft and meta accounts on all devices. Does anyone know why? I would appreciate all ideas and remedies. Thank you, cb