Hello, I have been doing sourdough from quite some time now. My advice would be to search some dedicated channels on youtube. Pro Home Cooks, The bread code, Sourdough journey are all great sources of information. The quantity of information you can get can be overwhelming but the actual process is not so complicated and sourdough starter is actually quite resistant.
You can read the dawn of everything book which is a very interesting take at a lot of those assumptions which are indeed false. This book goes deep into the ideological bias scientists have when interpreting evidence.
Pollution is not the only issue with cars. In fact, I would argue that this is not the main one in cities. A car has negative impact on infrastructure, public space sharing, safety, etc. Electric or not.
I have this exact GPU and can game everyday on my Linux computer with very good performance, so I am not worried for you, you will find a way to fix it. I don't know about this game in particular but for each game I install, I always check protondb website for other user experience on the game and copy past the commands other users recommend. Then I paste the command in steam settings for the game. Moreover I use feral gamemode which helps improving performances, and proton ge.
I guess it's more to avoid drivers to go too wide than a security measure.