Philips 50PUS8807 Dirty Screen Effect Problem

I am experiencing the Dirty Screen Effect problem on my Philips 50PUS8807 brand 4K UHD TV, which was installed 2 weeks ago. This problem has existed since the product was installed. It is especially noticeable in football matches or fast camera movements on solid color. I also checked lower-segment TVs, but there is no DSE problem at this level. This is an extremely disturbing situation as I am someone who constantly watches and plays matches. I bought this TV just for this reason because it has 120hz. A problem not expected from a TV of this level. Please I want a solution.