Linux Gaming

I was able to successfully install and play zenless zone zero through steam. I installed the game launcher onto my OS drive but the game itself to a seperate Linux drive. I was able to play and install updates for a long time until yesterday. There was a new update out I tried to install it but it said I didn't have enough space. I have 300gigs available on the drive its installed to so I thought for some reason it's trying to install it to the OS drive. I wasn't sure how to fix that so I figured I'd just uninstall it and reinstall it to my second drive. But now when I go to install it, it says my drive doesnt have enough space. I'm not sure why it would say that when I have 300 gigs available. I also tried re installing the launcher onto the drive that I want to install the game on, but it won't install to a drive that isn't C: not sure what I can do now.

EDIT: I tried every solution suggested below, nothing worked. I eventually gave up and connected an external drive that's NTFS and the game installed to that. Thanks everyone for the suggestions. EDIT 2: after thinking about this I remembered that when I first installed ZZZ, I didn't have my drive auto-mounting on boot. I guess after making that change the launcher didn't like my drive or something