Unfortunately, there is this issue for many Sony Xperia 1 III, 5 III and 10 III. Ihave too (Xperia 1 III). I didn't find any solution for this. Check this...
https://community.sony.co.uk/t5/10-series/xperia-10-iii-awful-green-tint-and-flickering/td-p/3809046...