Try them on with your game socks. You know, the ones that go halfway up your calf. Don’t wear beach flip-flops and expect a perfect fit.
Walk around the store for 10 minutes. If they pinch anywhere, don’t buy them thinking they’ll “break in.” Shoes that hurt in the store will hurt on the court. Period.
And finally, replace your shoes every 6-12 months if you play regularly. The cushioning compresses like a squishmallow left in the sun. Your knees will send you a thank-you note.