You need quantity

Being able to play a lot of different styles of music isn’t just about quality practice.

You need a large quantity of practice.

You need to practice a large quantity of music as well. That’s not to say that quality practice doesn’t matter, but quality alone won’t get you there.

Practicing a large amount of music with sufficient quality will get you there.

This gets easier the more you do it. If you’re learning your first four chords on guitar, those first chords will take a while. But once you know four chords learning the next four is going to be a lot easier. You already have four chords as a reference. After learning all eight of those chords, the next eight will be even easier. And this continues.

Quantity makes more quantity easier.

ISJ