What linux needs to be like Android and how to do it?

Android is basically Linux. I don't know, maybe I am wrong but that's what I feel/think.

So, my mind is that Linux can be easily converted into an Android-like OS. Right?

What exactly I mean by that?

The following:

1. Android security.

• I like how in Android an application can't access data outside its own folder and can't read other apps data or spy them. Except for this is just file explorer apps that you need to browse for files and folders. I know that there is flatpack which is doing something like this but it is not the same thing because each app will take a lot of hard drive space. In Android there isn't such a problem so you can install a lot of apps and drive space is still free.

• I like how the Android system itself can detect what right needs each app you want to install and it is asking you to allow it or not. There should be something like that in Linux too.

1. Incompatibility in Linux! I used a popular Linux distro for almost a year and I managed not to broke anything and tried not to mess up with settings or to customize it to much. It worked like a brand new installed distro. The problem is that after I updated the system it didn't work anymore. And I didn't do basically anything. Why this? In Android you can update the system every time it is available and never get broken by its own updates. That's hilarious! It should be done something to avoid this.

2. Be able to run Android apps natively in Linux distro without virtual machines or something like that. Why this isn't possible?

Thank you in advance!