Plenty of places you can do this. Put “homesteading” into a search engine of your choice and you’ll get more information on the topic than you can handle.
You’ll also pretty quickly realize its a very hard, tedious life and we have it pretty good in many ways in the modern world.
Same on Witcher III. I’m the target audience of that game - I love RPGs of all kinds, have played all the classic series like TES, Baldurs Gate, Planescape, Icewind Dale, Dragon Age, you name it. I even play ttrpgs multiple times a week.
I wanted to like Witcher III so bad that I forced myself all the way through the game to an optimal ending. But I just never started enjoying it. The world just feels… Flat. Fake. You do exactly what CD Projekt Red envisions or you hit a stone wall of empty game world.
Despite the skill trees and inventory and all of it, it just doesn’t feel like an RPG at all. It feels like a Disney ride on rails.