Turn OFF File Sync Creative Cloud 2020 - 2021

I've scoured the forums. There are lots of questions about this but the correct answers are no longer correct, as they say go to CC, then Prefernces, but I can't find prefernces so I'm going to assume they're no longer there in CC 2021. If they are, please let me know how to get to them.

I'm on rural internet, and the continued syncing means I can't upload anything else. I blamed my ISP, because it's often that it goes down or it's overloaded, but I spent almost two hours on with two differnent support people only to eventualy find out that Adobe was the cause. Lightroom had done an update the night before.

All I can find is that I can 'pause' file syncing, but how on earth can I turn it off permanently?

This is a huge flaw for folks who have limited internet.

Any help is appreciated.