First car for beginners up to 6,5k€

Heyho, I’m going to be 18 in the near future and as a suitable ‘gift’ then also car comes to the door. The driver’s license is of course already made. I’m now looking for a good used car for max ~6,500€ What would be important to me with the car is that it doesn’t look quite like an old ham, this also applies if possible for the interior. I realize that I can’t expect high-tech. In my research I found a few fancy BMW 1s with EZ 2007 which all around the 125.0 00 km on the hump, however, my father advised me not to do so, because these vehicles would probably often need repairs. I don’t know about the used car purchase, so I thought, ask people who have the idea. I would be very happy if you, or exactly you could make me a suggestion for a car, which at best corresponds to my wishes. I would like to thank you for the answers.