if you use left rudder the plane will turn left, if you use right aileron the plane will turn right
Not that simple. Rudder
yaws the aircraft, aileron
rolls it.
What's happening Depends whether you use the crabbed appraoch or the wing-down approach.
For the crabbed approach: you need to yaw the aircraft to straighten up the nose, so that's where the left rudder comes in. The secondary effect of the rudder is roll, so you need right aileron to produce roll in the oposite direction - so the two roll effects cancel each other out, but there is enough yaw to line the aircraft up with the runway.
For the wing-down approach: you need to yaw the aircraft to straighten up the nose, so the initial bit is exactly the same as for the crabbed approach. But once you've done that, the wind begins to blow the aircraft off the centre-line. So you roll the aircraft into wind using aileron - the sideways component of lift now counteracts the wind. Being banked, though, will cause yaw, so you must maintain enough rudder to counteract the yaw from the bank.
I think you really need to sit down with an instructor and discuss this, though, because it sounds like you have some serious gaps in your understanding which can't be rectified by reading a post on an internet forum.
FFF
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