Got the green line😭

I have been using this phone for nearly the past 3 yrs. Haven't had any issues with the phone except for having poor battery. Recently the climate started getting hot and I started gaming as well. And after the Feb update, I got the green line. Will approach samsung for a free replacement, but will not expect much since this phone has been in contact with water multiple times.

And guys, I think this green line is mainly due to heat and not really associated with software. I got this only after playing very graphic Intense games like genshin.