Problems with leased Cupra Leon – Reduce leasing rates?

Hi together, I am currently driving a CUPRA Leon ST VZ 2.0 4Drive in leasing. As much as I love this car, I also have some problems with the soft- and hardware in the car, like many others here in the forum. On the one hand, the speaker at the front in the middle regularly gives off very annoying scratching and interference noise and on the other hand my front-assist and the occupant protection repeatedly falls out in case of heavy rain. In addition, the infotainment often hangs up from now on and Car-P lay loses the connection to the mobile phone. This morning I brought the car again (for the 4th time this year) due to the many problems in the workshop. I talked to the workshop manager briefly about the topic and that I am by far not an isolated case, as shows for example the current report of the car picture to Cupra. In a side sentence the workshop manager mentioned that I was due to the many problems and the given problems by Cupra times to check if I can’t shorten/suspense the leasing rates. So far, no official error description from the manufacturer led to the problems becoming less, rather, due to software updates, there were more problems. Does anyone have any experience, if I can do something there? I am aware that nobody can/should do a legal challenge here, but are there perhaps reports of similar cases? Thank you in advance and greetings Jens