Max is just extremely good at inducing rotation under braking. That is not something you teach, it's a matter of feel. If you don't have the right feel you just can't do it. And it's all a matter of balance. You need to be critical on steering input and you need to be critical on throttle application, because pedals are not just for "going fast and slowing down", they're a weight shifting tool.
You brake, weight is shifted forwards. You push on the throttle, weight is shifted backwards.
And this is important, because by lightly loading the fronts, you can actually get a bit more front grip and 'push' the car to whatever direction it is currently headed. Also an unloaded rear, counter-intuitively, sometimes can be settled down by applying a little more throttle (context is important here, this is only true if it happens as a result of over-rotation at the front. If you actually brake the grip-limit of the rear tires, there's nothing that can save you from a spin).
This video (more simracing oriented, but the technique mirrors real life) is probably the one that explains the 'braking' rotation the best
Now all of this, brings me back to the 'feel' point that I made earlier. If you don't have the proper feel, you try to do it 'manually', but this almost never works out. You have to drive on instinct and let your 'feel' guide the car through the corner. It's glaringly obvious in the telemetry that Lawson has no feel with this car whatsoever. Especially in qualifying in China. Not a single lap by Lawson was driven the same. Sometimes he brakes early, sometimes he brakes late. Sometimes he carries the brakes for longer, sometimes he waits to get on the throttle. It's just different almost every single lap. He is just trying to get laptime somehow, because he has no real feel for the car.
A car that "tricks" you and doesn't behave as you expect will just ruin the feel you have for it. Then your brain shuts off your instincts and tries to react "manually" to the "anomaly" instead. The moment you no longer drive on instinct and your "active" brain is involved, you're automatically slower. This is where the problem lies with RedBull and their second drivers. The car must behave in such a peculiar manner, that only Max has the experience (+ talent) to get on top of it. It is highly unlikely this characteristic will change this year. All they can hope now is that they find a second driver that likes and expects similar things from a car as Max does, or that whoever is on that second seat is extremely adaptable and gets on top of the car with a couple of races of experience.