This is what I do, except using a general playlist. At ~ 300 songs almost all recommendations I didn't like. At current ~ 400 songs all recommendations I don't

This is what I do, except using a general playlist. At ~ 300 songs almost all recommendations I didn't like. At current ~ 400 songs all recommendations I don't like and Spotify gave up with a passive-aggressive message sort of "I give up, add more songs if you want better recommendations". (Note that I have a wide variety of styles in the playlist; too lazy to break up in genres and also I kind of like the "surprise" factor)