Reading your post it sounds like you dont really want to learn how to do something new. You just want to use your existing skill set to make money. That is fine

Reading your post it sounds like you dont really want to learn how to do something new. You just want to use your existing skill set to make money. That is fine but to start a business, and starting a side hustle is starting a business, you need to learn new things. If you dont want to do that then maybe finding a smaller company or a company with a better culture will help. I didnt love my first two eng jobs. I like this one a lot. No middle management bs. No politics. Get to work on interesting stuff. Just took some time to find it. Ask friends where they want to work/the best place they have worked is.