While YUNO is a great way to get started, I strongly encourage you to understand basic concepts, like docker, and maybe try to run something outside of it for fun. While not even remotely the same thing since YUNO is just the OS and “app store”, you would be very similarly tied to that ecosystem the same way you are to Google now. Not to mean that YUNO would have any control over your stuff, but you would be dependent on them for what you can self host.