Clamping is critical with pocket screws. For face frames you need to move the clamp over each screw before seating. I recommend the vise grip type clamps with big pads.
For something like a cabinet box, same thing, except you’re using a bar clamp. Tighten down hard.
I use a standard drill rather than in impact for pocket screws, especially in plywood.
That said, it’s easy to get addicted to pockets screws. In many cases they are not a substitute for joinery, such as fixing an apron to a leg.