Awesome. Sounds like you made the same journey. Right now it feels like I might ditch the dual boot too in a near future.
I use Proton for Steam games. You can enable it in Steam settings, just run it via Steam afterwards. For games purchased via GOG, I use Heroic Launcher which uses a variant of Wine.
It’s generally really hard if you have no experience. But if you’re willing to pay, maybe. Check this out: https://hitchwiki.org/en/Hitchhiking_a_boat
I don’t know if this is a US thing. I have no large expectations of HR, but I’m also part of a union and like most places my company has signed a collective union agreement. If there’s a conflict the union will represent you as well. The HR people at my company seem completely OK though, I have dealings with them due to my role.