So here's what I did and it worked for me. Somehow I believe when the files app updated it didn't automatically ask for the permissions that are necessary for Drive and My Files to sync. I fixed it! Only took me 3 weeks to figure it out lol. Apart from running heavy apps on my workstation, the rest can easily be done on DEX and has replaced my laptop for the pass month.

I really hope samsung pushes more functions with dex and fix all the annoying bugs, it is really cool being able to do everything from your phoine directly. Tried googleing the issue but I have found no one with this problem. Would really love making this work to ease my workflow when I search for things instead of using the google drive app. Tried with my Gsuite account and personal account, and they still do not sync. Samsung cloud and Onedrive are working fine. Everything is allowed, it just says ''trying to sync'' but the page is empty. I use ALOT google drive, and I have been trying to configure the sync into the my files manager, without any success. Big Samsung fan for several years now, currently using a samsung note 10+ as my daily, and been using DEX for my normal daily tasks like using web apps, emails, excel and word etc.

Android google drive not syncing