I have uploaded the Official Android 10 firmware G9650ZHU6DTA7 for the SM-G9650 (Zto but can be flashed in your 9650 with another csc)
The firmware is debloated with no carrier add-ons.
In Odin , on CSC if you choose HOME your data wont be deleted. CSC_OMC will wipe your cell.
Its working perfectly, I've tested. It's on Google Drive.
The Samsung Drivers are HERE