I use the rudder and throttle as much as I use the ailerons and elevator. Didn't start out that way, but I've become a much better pilot since I started.

As others have said, learn to use the rudder. Start by adding a little rudder during every turn. Once you get use to that, try adding a little opposite rudder during a turn to see what happens. Note that I said a "little" opposite rudder. Too much opposite rudder will get you into knife edge flight if the plane is capable.

Eventually, when landing in a crosswind, you'll use the rudder to keep the plane on the center line of the runway, and only use the ailerons to keep the wings level.

You'll be surprised how much difference it makes to use rudder when flying, and it doesn't take much.

Good luck,
Dennis-