I’m having a little trouble understanding you. Maybe it would be better to write in your mother tongue? There are helpful people for most languages here on the forum.
If I understand you right you are looking for the following wiki:
About root: Just go to Settings > “About phone” and tap the “build number” 10 times. Then the developer options will apear in Settings, right above “about phone”. There you can activate root.
If you don’t find the Settings app you’ll have to perform the “edge swipe”. To do that put your finger on the right edge of the screen and move it towards the center. 5 icons will appear, release your finger above the circle with the six dots inside.