4K Monitor with Lines

Hello, 4K 144Hz 32-inch monitor. Higher specifications are available on Amazon; here is the link. The monitor suddenly displayed lines—I believe it is repairable, as the monitor has not fallen, been struck, or suffered any physical damage. I purchased it approximately six months ago. I bought the monitor for 1500 SAR. I am asking for 200 SAR. For contact, WhatsApp only: 0504965207