Where to find normal Android app developers?

I've decided to launch my first Android app, but I'm not sure how to choose the right team. I would like to understand what kind of development services there are and what to pay attention to when choosing a contractor. Maybe someone who has encountered something like this and can suggest how not to miss out?

I was looking for reliable people to create a mobile application and noticed that it's not so easy to find good specialists - there are a lot of different offers, and it's not clear who can really cope. I would like the work to go smoothly and without unnecessary questions. By the way, I found a useful page with information on Android App development services https://pharosproduction.com/android-app-development-services Everything is explained in detail there.