Authorization for folders on the laptop?

I'm not very familiar with laptops and PCs, which is why I'm asking here. So I want to delete a folder, but whenever I want to delete it it says: "You need permissions to perform the operation." Then it says: "You must get the necessary permissions from the" Trustedinstaller "to make changes to this folder.". I'm the only user and I have an administrator. I want to delete it so I can reset my laptop. Unfortunately, you need storage space for this.

Are you sure you don't need the folder?

Anyway, here's the explanation: https://praxistipps.chip.de/...t-das_9872

and here the solution: https://praxistipps.chip.de/...-nun_28108