Recommendation for HQ TTS Engine with correct emphasis(German, female)

my target is to create such a song like this one https://www.youtube.com/watch?v=9t5SOgCJ4A0&ab_channel=NexdesSongs 

but I did not find a TTS software, that sounds as good as that one, that was used here..

Maybe someone can support me with a recommendation.

Alexas voice is not that  bad, but not good enough 😉

Thanks in advance