Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 18.0.2): 19.01
Operating system and version (eg, Ubuntu 20.04): Linux, Version unknown (Webhosting)
Apache or nginx version (eg, Apache 2.4.25): unknown
PHP version (eg, 7.1): 7.3.20
The issue you are facing:
Sometimes Users generate public links (german: Link teilen) of folders/data that shouldn’t be made publicaly available.
I can’t restrict the specific usergroup of generally creating links, because in certain cases it is needed.
But I can’t delete those public links without Impersonating the user who created the link.
Is there a way for admins to delete those links which I havent found so far, without impersonating?
Thx