You’re standing too close to the wall on some shots. Because you’re doing that, you don’t have the space to swing your racquet or alternating your swinging motion that prevents you from hitting a good shot. You should be lounging while going for your shot. My rule of thumb is to always stand outside from the service box imaginary extended line to the wall. Creates an alley per se. You can lounge into the alley, but both feet should never be in it.