Find more books. Books make everything better.
Get some molotovs and maybe some grenades for really bad situations.
There’s always something nastier than you out there. Never assume you’re at a point where you can’t improve your skills/gear.
Just in general, it helps to have a goal, even a small one. It keeps you moving around the map, and you’d be surprised at how involved even a small goal can be. For example, maybe you want to forge an awesome sword. You need a full smithing setup, then, and some books to teach you how. And sure, you could just use a charcoal or electric forge, but why not use a vehicle forge on a vehicle with solar panels for effectively infinite charge? Or how about an electric vehicle forge on a light frame with shopping cart wheels that you can drag around your home, with a swappable battery installed and another set of frames outside your house with swappable batteries as well as solar panels, so you can just change them out when they get low? Just that idea - “I want to forge a cool sword!” - can involve a ton of material-gathering, book-finding, and treasure-hunting. There’s plenty to do, you just have to go after it.