This is how I did it.
Go in as deep as you can, break, slow as needed, start your turn, get back on the gas as soon as possible. If you have time to breathe the engine , flap the throttle, you didn't go deep enough. If you get this feeling "if I go any deeper I'll spin"you may have gone deep enough. Test to that feeling, find out where your limits are. Seems every corner has its limits, today, with your set up, test them all. These are not skills you are born with, only hard work and a lot of testing, will give them to you. The more you practice, the more you'll improve. "Driving is tough"! If you find it easy, you're not trying hard enough! For every new driver, it's a skill set that you have to develop.
Coming out of the turns, never let off the throttle. As you're coming out of the turn your engine is building heat inside the cylinder. If you have to let off to keep from dropping a wheel, you have to start the process all over again. Don't let off, touch the brakes slightly, if needed, to keep from dropping that wheel. Keep the outside wheels on the track as much as possible. Outside wheels, in the dirt, have less traction. Harder to turn, harder to get traction on the right rear.
In close passing situation, do whatever you have to do in the turn. If you get under the other guy, you have the turn as long as you're ahead and he's on the outside. Make the turn as best you can, just keep him slightly behind and on the outside.
As you can see, 2 entirely different ways of making a turn, depending on the situation.