Every time i get an update, my bookmarks disappear. Why does this have to happen every time there is an update?
I don't know; it doesn't happen to me. This article may help: https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update
i was not logged into a profile. i have not logged into one until i read the article. i now have a profile and i an logged into it.
You always have a Firefox profile to store your personal data although you may not have been aware of it.
Are there backups available in the Bookmarks Manager (Library)?
You can check if you have an "Old Firefox Data" folder on the desktop in case the Refresh feature in Firefox has been used and a new profile has been created.