Does anyone know this children's series?

Hello, I've been wondering for years what a children's series from back then was called. It ran between 2010 and 2016 on Toggo/Super RTL or Nickelodeon. Unfortunately, no one I've ever asked knows the show or has watched it. It's about a suburban girl with a family. She also has neighbors, families, and friends. She also plays tennis and often wears a tennis skirt. The house has a white fence (which I think can also be seen in the intro). The show is played by real people and isn't animated or anything… Please help me, it's not a standard series either, but rather lesser-known…