How to Delete & Reinstall FH4?

Okey So after the update of yesterday, I wasn’t able to play anymore and got an error that some files are missing or corrupt.

I tried to ask for help, but the only thing I got was if I was using Xbox or PC.

So I tried to unistall and reinstall, but there is a problem with that. I noticed that my harddrive didn’t make space available again, and I got 20GB space left, and I need 70GB to reinstall the game. That means the game didn’t unistall properly. I found it in C:\Program Files\WindowsApps
There are 2 folders:

  • Microsoft.SunriseBaseGame_1.216.279.2_x64__8wekyb3d8bbwe
  • Microsoft.SunriseBaseGame_2018.1112.1858.2_neutral_~_8wekyb3d8bbwe

They are 65GB together, and I would like to remove them. Unfortunatly, this doesn’t work, as I don’t get access to those files, even though I am the administrator …
In settings, security tab, I tried to change and yet I failed.

If anyone can help me fully unistall this game, so I can reinstall, I would really be gratefull!

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Extra info:
Windows 10 - Home
Intel I7-8700k
Nvidia GTX 1060
8GB Ram
Custom PC