How to use OAuth or MSAL, PKCE Authentication using on Quest using in built browser?

Hi Guys,
I want to achieve Authentication using Quest using an inbuilt browser, MSAL, and PKCE standard but I am unable to do so.

Has anyone found any solution, without this it seems our project is stuck at Auth only 😞 

Any leads would be greatly appreciated, as I've been stuck here for a few weeks, I tried Chrome, by side-loading it, but this solution I Cant recommend to my client until Chrome is available Oculus store for download. Now users can't just enable dev mode and sideload Chrome to make this work.