I haven’t played fallout, so idk how far off this is going to be, but if you like scrapping everything around you to make other stuff, have you tried dysmantle?

That’s basically the game - explore, destroy stuff in the environment (including nearly everything, except some buildings/structures are unbreakable because they are quest spots), use the materials to make better stuff so you can explore and destroy better. Increase the damage your weapons do to break more stuff. Etc.

There’s also zombies, but that’s sort of a minor part of the game imho (you get stuff for killing them that you need to level up gear, though, so not totally pointless).

I put about 100 hours into it to do everything except the zombie respawn thing because it’s too tedious (involves killing all enemies, in all areas, 4 times total, there are 16 areas, and some of them have 100-150 zombies in the zone. No thanks. But you don’t really get anything for doing that anyway except the knowledge that you did it.)