Seat Leon 5F LED headlights covered with cracks

Hello community, I drive a Seat Leon 5f ST EZ 08/2018, bought 2022 at a used car dealer. When buying everything was okay, after 1st year it started easily that the headlights had such small cracks/ bubbles in the plastic s. Pictures. Maybe I noticed it only then. But now it has become worse. At first you only saw it when the light was switched on, now you always see it, especially from the side. 4 vehicle conditioners have told me that s I have written to the manufacturer (Valeo) and to Seat, unfortunately without an answer. Really annoying. Hopefully I come through the TÜV. My question would be: Do I have a chance to achieve something at all with a nearly 6 year old car? If not I would get good used ones in the bay, cost so about 1200 Euro, what I have found. Does anyone have experience there? Thank you.