TL;DR - I'd say try learning and building with both and see which one makes more sense. You don't even have to think which is better for your career, as fronten

TL;DR - I'd say try learning and building with both and see which one makes more sense. You don't even have to think which is better for your career, as frontend, backend, fullstack can all find good paying jobs. What matter is you enjoying your work. I'm a self taught software engineer, and have about the same experience as you. I knew a little bit of python when I started learning and thus decided to learn Django (backend), really liked it (even then CSS was giving me the most trouble). Then decided to learn JS to get a more well-rounded education, but hated it. Now I use Hotwired techniques for my web apps, to the least amount of Javascript possible.