To be fair Steam got massively useful on Linux the day they released Proton. It made the number of games you could play go from a few thousands to something like half of the Steam catalog.
Is there a Linux friendly GPU you recommend? I have a NUC with Ubuntu and 32gb of RAM that I wouldn't mind plugging an eGPU into if it meant I could play my Steam library (I haven't touched Windows for home/gaming about in 4 years)
AMD is definitely recommended these days, but Nvidia GPUs also have excellent drivers but may require some work depending on which distro you are on. As for eGPUs, please carefully check how to handle that on Linux as it's not always supported out of the box.
To be fair Steam got massively useful on Linux the day they released Proton. It made the number of games you could play go from a few thousands to something like half of the Steam catalog.