[retroplayer]

Windows 10 and Kali Linux on my PC right now

Why Kali? Everything runs as root so if anyone gets into your machine, you are royally boned.


When you access root on a *nix machine:

Noone else uses my laptop. Im the only one using it. I got a brother and he has hos own laptop.

Your brother isn't really the person I would worry about. One wrong slip and a hacker will have complete control over EVERYTHING. If everything runs as root, there is very little protection to keep you safe. And unless you are actively penetration testing(or hacking on your own) there is no reason to even have Kali installed. Its just Debian with a bunch of hacking tools installed that runs as root automatically.
As a security guy, trust me when I say using it as a main OS is like playing with fire. For your own safety, don't use it outside of actual hacking projects. At the very least, set up a profile that is not root, and lock the root account tightly.