https://www.netzwelt.de/tutorial/93450-android-so-rootet-samsung-galaxy-smartphone-tablet.html
Android: So rootet ihr euer Samsung Galaxy-Smartphone oder -Tablet

https://praxistipps.chip.de/root-bei-android-was-sind-die-vorteile_3453
https://praxistipps.chip.de/android-rooten-so-gehts_3692

https://magiskmanager.com/
Magisk is a systemless rooting system. This basically means that you can 
modify your phone’s system without making any changes to the core code. 

https://www.lifewire.com/how-to-root-your-android-phone-121676
 How to Root Your Android Phone
Rooting your phone is easier than you might think