Hi m8 I tried out your method,Hi bro i found a good solution for this issue you can check it through this youtube link
Firstly, great job figuring out a way that's *almost* perfect! Must not have been easy.
However sadly I will not be using this method because movement inputs with the left stick are hindered/delayed. If I used this It would make me worse at GK when playing online because it makes positioning yourself a very odd experience. Sometimes my keeper moved too much other times too little - its just not right. So if my brain gets used to it, then online GK movement will feel weird and I don't want that to happen.
But it does indeed fix the camera completely.
So for people who mainly use l1/LB for movement (auto position) this will be the best fix for them, assuming they are willing to spend the time to configure it.
P.S. M8 I advise you go into more detail in your video for other people as there were a few important steps you didn't mention, and this method didn't work at all until I figured them out. I mention them below.
A) I had to go to 'controller settings' in game and went on Control Device, then selected 'KEYBOARD ONLY'
B ) I had to go to 'Select Sides' then put controllers in the middle and the keyboard on my teams side.