Polish popular music is poor.
Some of it is, but I have found many songs and artists that I like. As you said, when it's good it's very good. Some real gems to be found.
@kaprys, I really liked your songs, but then I like most songs you've posted.
A couple more:
Śląska Grupa Bluesowa 2020
Leszek Winder "Blues Forever" Wilczyca