Sounds like you’re about where I was at the beginning of my Linux journey. I was a Windows user from birth (well okay, my very first computer was dual-booted with OS/2) because that’s what computers came with, etc. I started playing with Raspberry Pis as a hobby, I learned a little Linux, and at the time you HAD to do a lot of stuff in Raspberry Pi OS through the terminal; it didn’t have a GUI package manager yet, so I learned some bash.
Then my laptop died, I got a new one, and Windows 8.1 was inflicted upon me. I decided to try desktop Linux.
I did decide to keep Windows 8.1 around because I still sorta knew how to use it and that’s where all the software I knew how to use ran, so I dual booted. I tried out a few distros in VirtualBox, and Linux Mint just felt like home and it’s been my preferred daily driver ever since.
It is a different system, you will have to get used to doing things a little differently and thinking in Linux’s terms. If you have something you NEED to do, and you’re struggling to figure it out in Linux, go ahead and boot into Windows, get it done, turn it in, then come back to Linux and without that time pressure see if you can figure it out now. Eventually you’ll stop booting to Windows.
As for gaming: Valve has done a lot for us. It’s amazing how good it is now. Used to be there was a list of games that did work on Linux, now it’s more efficient to make a list of games that don’t. Mainly competitive multiplayer games because of EAC. Some of the high end bells and whistles don’t work as well in Linux because they don’t get as much attention as Windows does, but I’ve spent a lot of time in some very good looking games made in Unity and Unreal.