Experience: I have a bit of experience with Linux. I started around 2008, distro-hopped weekly, decided on Debian until around 2011, when I switched to Windows as I started getting interested in gaming. Tried switching back around 2015, this time using Arch Linux for about a month, but had some bad experiences with gaming and switched back to Windows. I have had a Debian and Arch VM in Virtual Box since then for testing different applications and a more coherent environment to work with servers.
Understanding: Which brings me to now, I am really interested in using Linux for gaming, I know there is Proton from Valve and that they have been really pushing Linux gaming forward with it.
Thoughts: I have been contemplating dual booting by installing Debian to an SSD and simply using the UEFI boot menu to choose instead of having to install to the EFI of Windows.
I guess, I should just do it, as it won't affect my Windows installation, and I could test different games and if all works well, move over. This would also allow me to try different distributions, though my heart is for Debian, I even like Debian Unstable.
Note: I am sorry for the wall of text, I am just kind of anxious I guess.
Been running Arch exclusively on my gaming rig for 3 months, now, with no issue. Thanks to Proton, the only blocker is games that use anti-cheat solutions that don't work properly. Everything that's relied on VAC or EAC work fine, though.
This is my third attempt at making this move on my gaming rig. The first try was back in 2016. The second was in 2018. This time, I think I'm here to stay. The Steam Deck's success was the final ingredient.
The steam deck is almost entirely responsible for my migration to Linux, am in a similar boat to you of having attempted a number of times and written it off as impossible to use for gaming
Bought a steam deck (and received it a year later lol) and that was what made me want to give it another go. Now I don't even have windows installed on my PC and boot into it on my laptop maybe once a month to test something for work