i still need a windows installation for those games that refuse to work on Steam (I play Helldivers 2 and Space Marine 2 coop and I can’t get expedition 33 to run on Linux

All three of those have a gold or higher rating on Linux, meaning they run fine on linux with little to no effort. Helldivers 2, Space Marine 2, Expedition 33. If you are having specific issues, check out the linked pages where people share their fixes.