Kia Pro ceed ED BJ 2009

Hello, I’m new here, I hope I’ve landed in the right area. My question would be, I bought myself a Kia Pro Ceed 126 Ps sports package, best equipment variant, Alu rims etc.pp for 18.800 almost 7 years ago. I have meanwhile about 65 000 km down and I wonder for weeks, months what would be more meaningful. Since I am no expert ubd me each to something else advises times my question. Makes it more sense to sell ( annual driving performance about 10 000km ) and again a new similar models are at Mobile.de between 6500 and 7500 Euro. That would be good bread for a down payment that the car still brings up to date. So far I had nothing on the car( except wear parts new brake pads ), but I absolutely don’t know when about shock absorbers, clutch etc just the expensive repairs occur. Does it make sense in my case to sell the car, for a new or can I P without having to put in much money. However, then the car is hardly worth any more and I am afraid that I have put too much into it, get nothing for the car and then would have driven it better now to get a new one. Is there maybe such a rule of thumb because everyone really tells me something else? Hope you understand my problem.