As a Linux home user that uses windows for work, I recommend you start by debloating your windows. I prefer the Powershell script found here. There are multiple options for debloating windows on github, some also include tools to disable telemetry. I prefer more control over what telemetry gets disabled, and use O&O Shutup to manage that separately.

Then install a few Linux distros in a free hypervisor (Hyper-V/VirtualBox/VMware Player) on your lean windows. Note, Hyper-V is only avaliable on Pro versions of windows. Experiment until you find a Linux distro you are comfortable with. Build your confidence before you take that jump, and you'll be more likely to stick with it.

If you still find you may occasionally need windows, you can always dual boot, or run windows inside a hypervisor on Linux.

Look at ProtonDB to see what games you own will run on Linux.

Pop OS: is a good Ubuntu based distro.

The Nobara Project: is a Fedora based gaming distro.

Drauger OS: is another good gaming specific distro.

Each of these has their own pros and cons depending on your needs and hardware. Google is your best friends here. You will have issues with a game not working like you want. Again Google will be your best friend here.

My biggest suggestion is to embrace the challenges. Understand that in the last two years alone gaming on Linux has improved dramatically. Stay with it Linux is always maybe a better experience overall even if some of our games don't work right now.