You can’t shred on an acoustic
Ever listen to much Flamenco? Shredders only wish...
I would say listen to some early Django Reinhardt.
Ironically, my poorly played classical stuff is probably the best I ever got. I grip the guitar like I'm trying to crush the neck to powder because my acoustic that I learned on had super high action and played very stiff and it is just burned into me to play that way on electrics too. To this day I can't really play very fast because of that death grip.