hello, ive had my Firefox account for YEARS. i got a new device, and installed firefox on the new device. i logged into to new device, told it to sync my old data over, and instead, i think it removed all my old data. my passwords are still saved, but my bookmarks, my collections for tabs are gone, and i cant seem to get them back. this was done across my 4 devices. how can i backdate, or find an old backup to revive?