I see a few notable ways to account for this:
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Delete all data in OneDrive and uninstall it. It can't sync crud if it doesn't exist.
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Do not use a Microsoft account with Windows. Microsoft makes this annoying, unfortunately.
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Use Linux. The first games he mentions are Read Dead Redemption 2 and Assassin’s Creed Valhalla which both have gold status for Linux on ProtonDB
Realistically none of these should be required, but Microsoft has been driving Windows downhill for years now. This problem can snuggle with the piles of other ways Microsoft has been making their OS worse.