Unless someone gained access to your Spotify account, they shouldn’t be able to delete your collaborative playlist (other Spotify users who have access to your collaborative playlist only can add, remove, or change the order of tracks in the playlist; or remove the collaborative playlist from their own Spotify library).
If you don’t see your collaborative playlist there, then I would recommend contacting Customer Support; they’ll take a look and do their best to help.
In addition, if you have more than one Spotify account, it’s possible that the missing playlist is on a different account; so in that case I would also recommend reading this support article regarding finding any other Spotify accounts that you own.
I hope this helps, and let me know if you have any other questions.
Have a good day!
TreyAnastasioRock Star 6
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