android studio sdk location not found oboe

I know usually I should use support libraries. Every time when I try to use something, like, Activity or Fragment, I have to figure out whether I should use support libraries or system native ones. Maybe I don't fully know the logic behind this, but I hate these things. Not to mention, Retrofit+OkHttp is (IMHO) way much easier than either of them. This makes me wonder 'Why the system itself does not have built-in network / HTTP API like Windows or Linux?'. (For example, if you want to send network / HTTP request, the official docs recommended using Volley / Cronet libraries, which are quite complicated to use if I want to achieve something like JSON-Object serialization (maybe I didn't get it right). The official Android dev docs seem good for learning, but if you have some special scenarios, it seems you are on your own. But once I want to use more system features, or apply more designs, Android seems to be really hard or complicated to get everything right. For very simple apps or scenarios, I think the default setup of Android IDE & SDK, as well as docs, is all right. Maybe I am still not proficient enough to get everything right at once.

Simply put, I feel Android *seems* like a mess. Maybe some rant and misunderstanding here, I apologize for this in advance (and please comment). I just finished one's latest version and published, and I feel I want to share some of my experience on my Android dev journey.

So I developed so far 3 Android apps by myself, and publish 2 of them to Play Store.

Android studio sdk location not found oboe