Hello,

for explanation:
firstly you have to realize from what component/database source you pull links like https://www.crema.de/index.php/domaindetails?domainID=academy
After that a custom data source could be possibly configured to include all these links in the sitemap.

However the main problem is that this kind of links are not ok because not fully SEF rewritten. I have not informations about your website and i don't know if these links come from a Joomla component or not, however the SEF router of Joomla if triggered, should provide correct and fully SEF links such as: https://www.crema.de//domaindetails/academy

So the first challenge for you would be get correct links, after that thinking to the submission to Google and sitemap.

best regards

John