Thanks for reaching out about this here in the Community.
If the playlists you're mentioning were deleted, would you mind following the steps here to see if you can recover them?
Anyways, if you've come across actions unexpectedly taken with your Spotify, it'd be good to make sure no one is accessing your account in an unauthorized way. For this purpose, it'd be great to bookmark and follow the steps in this support page article as well as this one since they feature some essential info regarding how to keep the safety of your account up-to-date.
Let us know how you get on. We'll be here if there's anything else we can help with!
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