What’s the best way to host your apps as a solo dev? I personally don’t know how to manage an app end-to-end. I’ve only ever worked at big companies so that part has always been abstracted away from me.

Is it better to just learn how to manage an app by myself on an EC2 host? Or should I go the way of just using services like Heroku/Fly.io?

As for expected amount of users: not many. Hopefully one day perhaps, but likely not much for a while.