Spotify gives you the ability to control the privacy settings of your playlists. Here's how you can adjust them:

1. Open Spotify and go to "Your Library".
2. Select "Playlists" and choose the playlist you want to adjust.
3. Click on the three dots (More Options) and select "Make Secret" to make your playlist private.

If you want to make a private playlist public:

1. Follow the same steps but instead of selecting "Make Secret", choose "Make Public".

Remember, when you make a playlist secret, only you can access it. When it's public, anyone who follows you or searches for your username can see and play it.