After updating to Safari 15.0, it kept crashing every time I tried to open it, after shutting down my iMac for a night, Safari started by all my pinned tabs are gone.
I need to know how to fix this or at least know how to replace this version of Safari with the last one with all my pinned tabs from my BackUp.
Welcome to the Apple Support Communities. We understand you wan to restore your pinned tabs. We'll explain.
There would be no way to downgrade Safari or restore the pinned tabs unless you want to restore an entire Time Machine backup which may not restore the pinned tabs as they are saved inside Safari itself: Restore your Mac from a backup
You would have to recreate the pinned tabs: Pin frequently visited websites in Safari on Mac