Where are we getting shorts/pants?

I'm going through my closet (again) cause T made me grow out of my clothes (again) and I'm reminded how ill-fitting even my best case shorts and pants are. I'm pretty average in height and weight in comparison to the cis guy spectrum, so younger me figured it must be the lack of a bulge. But upon reflection, I realize... it's really that my butt and thighs are too juicy. Not disproportionately so, but more than most cis guys.

So. Similarly-sized and/or fashion-forward gentlemen. Where are we getting our shorts/pants? What brands work for us? What cuts? Is "athletic" cut what I'm looking for?

And before anyone says it, yes I know tailoring is an option, but I'm not out of options like that yet.