Screen Issue Yellowish Pale Bright

My Samsung Galaxy A71 (Not 5G one) have a screen issue, The screen flickering and then become Yellowish and Brigther, Everything that usually black it become brown (such as Youtube Blank Space that doesn't fit / AOD / Samsung Logo when restart) First it's change from normal to yellow and then it's become permanent yellow full screen, flickering to normal sometimes or brighter and darker version. Everything looks pale and bright some sort of contrast maybe? I've try safe mode but it's still the same. I'm asking first because I don’t want to factory reset.