Solo Gamer Problems

I very much enjoy playing solo ttrpgs. I really don't subscribe myself to the "dude bro" energy of just writing a book because playing solo is something I don't understand. If I wanted to try to write a book then I would write a book. But that's the thing, I don't want to write a book. I want an experience that I can be both the GM and player with a story that can surprise me. I hardly even journal my sessions. Just general notes about monsters that I would fight or what I bought from an NPC. Just my 2 cents I guess.