Hijacking this comment to share another alternative: the app Balance (https://www.balanceapp.com/) has really great sleep meditation, a bit similar to Yoga Nidra. They're currently running a promo where you can choose how much you pay for your first year (incl. a free option). I've tried a lot of Youtube/Spotify before and Balance works better for me. Plus doesn't come with the risk of being blasted awake by the next video/song/ad when I forget to set a sleep timer.

They also have excellent meditation for naps, where you can set how long you want to nap before they wake you up.