What amazes me (as an Android user) is that mobile Google drive app doesn't do what you'd expect from it: on PC it allows you to keep few folders on different d

What amazes me (as an Android user) is that mobile Google drive app doesn't do what you'd expect from it: on PC it allows you to keep few folders on different devices in sync, but on Android the app just allows you to browse/open those folders, not keep a full mirror of any folder from your PC locally. There are some third party apps that kind of do this for you, but shouldn't Google just make their app do what it is supposed to do? Where's the «backup and sync» alternative for Android? That's the only thing I need to use obsidian on mobile and get rid of Keep or any other app, because obsidian on desktop is just perfect for my needs. I used to use Zim wiki before, and it was almost what I need, but it didn't use markdown, looked uglier, was slower, and there was no mobile app.