Is there a way to stop Spotify from recommending songs with vocals in them?

I have two Spotify accounts, one free and one premium. I use the free account to listen to regular music I enjoy and the premium account to play ambient noises while I work. I know it's weird, but I like nature sounds while I work and do chores moreso than regular music. Sometimes I use my premium account to listen to classical-style music as well. I pay for premium because I like the lack of distraction for the purpose of that account. However, even after several months of using this premium account, after months of avoiding and skipping over tracks with vocals in them, they still get recommended to me. 99% of what I listen to is nature ambience and I'll still get recommendations for Billie Eilish, Bruno Mars, Bon Iver, etc. I've never listened to these artists before, I don't know why Spotify keeps throwing them in my mixes or auto-played music. Is there a way to block vocals or something in the settings?