I have a question there. I would like to reset my laptop to the factory settings and I don't want to start playing Steam again so I can somehow save that I e.g. Don't have to start over with ETS2 in my MP profile?
The profiles are saved online.
Take the GameSave Manager.
https://www.gamesave-manager.com
ETS2 uses Steamcloud.
Back up manually for games that do not use Steamcloud.