All Voices with US-Accent

Hi, Why the voices sounds like "Amerikans in Cologne"?? My own voice has a british acent.
2 Weeks ago the sounds GERMAN with a correct CH or a correct RRR...it sound that I come from Frankenland, a porivince in outback of germany... And evrything sounds scrachy, thi is no a good developement.....why???? cause it´s AI?
Not good....