Is private leasing recommended?, do I really have to be “fear” of it?

Hello dear forum community, although I always found the idea of having a “flatrate for the car” (leasing), I have avoided the topic of private leasing completely so far, because I was advised not to do so from many sides. One of the reasons was that (allegedly) in the private sector dealers like to send invoices about subsequently discovered impairments on the vehicle, from which one can not protect itself. I have here already many Beitr I am still very unsure about the issue of leasing/financing, so I hope it’s okay that I create another topic. It would help me a lot if someone could tell me if I really have to be “feared” of such cases or if I can really see the system like a flat rate for the car? If so, what do I have to pay attention to? Briefly to my situation: As a replacement, I am currently looking for a car for the next few years. In fact, I had planned to buy a used diesel for about 650€ for this time. However, I find the idea of paying a fixed “carefree” amount per month for a new car also very interesting.