Improve new release and discover playlist

[gueud]

Hello,

I would like to know how to adjust my musical preferences to improve new release playlist ? My spotify account is already over 6 years old and my musical tastes have changed. The "discover weekly" and "new release" playlists offer me a lot of music related to artists that I no longer want to listen to now. How to better personalize new releases? What is the suggestion algorithm based on? If I remove all the old songs from my library will it work?

Thanks for your help and sorry for my bad english ..

Pierre