If you don’t want those following your Spotify account seeing what you’re listening to, the music streaming platform allows you to hide your playlists.
In the app, click on the ‘Your Library’ tab on the bottom right-hand side of your screen. Here you’ll see all the playlists you’ve created. Select the playlist you want to make private, and tap on the three dots at the top right corner of the screen. Select ‘Make Secret’ from the menu that pops up.