Hello i love mozzila firefox from all the other browsers and i use it only and this is my first time getting problem with browsing online i have firefox 83.0 ( 32 bit ) and i'm working with linux (32 bit) youtube was working fine i think, im not sure that this problem happened after updating firefox i don't know which version of firefox i was using but now im on latest version when i shut down my pc and open it i found that my bookmarks deleted and all the history etc.. now Youtube videos stuttering/lagging and its really annoying problem, thx for your time everyone !

UPDATE: i tested another browsers like chromium and there is no problems in youtube works fine without any lag, as i said i prefer to use FIrefox i hope i get help as soon as possible

Did you lose other personal data like changes you made in Preferences (about:preferences) ?

This can be caused by a problem with the places.sqlite and favicons.sqlite databases in the Firefox profile folder.

• use "Verify Integrity" button on the "Help -> Troubleshooting Information" (about:support) page

If errors are reported with "Verify Integrity", close and restart Firefox or reboot and retry.

See also:

• https://support.mozilla.org/en-US/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file
• https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional

Try the Firefox version from the official Mozilla server if you currently use a version from the repositories of your Linux distribution.

> Task: checkIntegrity + The places.sqlite database is sane + The favicons.sqlite database is sane > Task: invalidateCaches + The caches have been invalidated > Task: checkCoherence + The database is coherent > Task: expire + Database cleaned up > Task: originFrecencyStats + Recalculated origin frecency stats > Task: vacuum + Initial database size is 5120KiB + The database has been vacuumed + Final database size is 5120KiB > Task: stats + Places.sqlite size is 5120KiB + Favicons.sqlite size is 5120KiB + pragma_user_version is 54 + pragma_page_size is 32768 + pragma_cache_size is -2048 + pragma_journal_mode is wal + pragma_synchronous is 1 + History can store a maximum of 112348 unique pages + Table moz_origins has 42 records + Table moz_places has 242 records + Table moz_historyvisits has 281 records + Table moz_inputhistory has 0 records + Table moz_bookmarks has 17 records + Table moz_bookmarks_deleted has 0 records + Table moz_keywords has 0 records + Table sqlite_sequence has 0 records + Table moz_anno_attributes has 2 records + Table moz_annos has 2 records + Table moz_items_annos has 0 records + Table moz_meta has 3 records + Table sqlite_stat1 has 15 records + Index sqlite_autoindex_moz_origins_1 + Index sqlite_autoindex_moz_inputhistory_1 + Index sqlite_autoindex_moz_bookmarks_deleted_1 + Index sqlite_autoindex_moz_keywords_1 + Index sqlite_autoindex_moz_anno_attributes_1 + Index moz_places_url_hashindex + Index moz_places_hostindex + Index moz_places_visitcount + Index moz_places_frecencyindex + Index moz_places_lastvisitdateindex + Index moz_places_guid_uniqueindex + Index moz_places_originidindex + Index moz_historyvisits_placedateindex + Index moz_historyvisits_fromindex + Index moz_historyvisits_dateindex + Index moz_bookmarks_itemindex + Index moz_bookmarks_parentindex + Index moz_bookmarks_itemlastmodifiedindex + Index moz_bookmarks_dateaddedindex + Index moz_bookmarks_guid_uniqueindex + Index moz_keywords_placepostdata_uniqueindex + Index moz_annos_placeattributeindex + Index moz_items_annos_itemattributeindex > Task: _refreshUI

sorry but my problem is not here mine is that youtube is lagging only in firefox

Please any help !

the support is dead i think