Thick vertical black lines down centre of tv

Hi,

TV is 55” curved samsung, had just over a year but don’t have my warranty or proof of purchase. Recently one very thin line appeared down the middle of the TV and then it progressed to a few thick black lines with bits of red and green in and a semi circle at the bottom (pictured). They stay there on all inputs. Rang a couple of tv repair places who said its not worth it as the screen needs replacing. Anything I can do to try and fix it myself? Its UHD 4K HDR.

Cheers