Are you running TF2 through proton? TF2 has a native Linux build.

I get a few, but not every single game like my desktop does.

Same issues here, opening steam each night greets me with every single game downloading 500 mb - 5 gb of shader updates. It’s insane. I don’t get why my steamdeck doesn’t do this but an Arch desktop does?

Or self host Bitwarden and you don’t have to bother with syncing the file around.