Hello! I'm brand new here. :) I have wavy/curlyish/frizzy hair. I say between 2a and 2b.

I'm looking at chopping it all off! I'm nervous that it will just be frizzy and I will have a difficult time getting it straight.  I know my hair isn't crazy curly.Do you think this cut will be okay? If I let my hair air dry, it is frizzy, but if I use a diffuser and product, I get decent curls.