Yellowing 3DS Screen

I’ve had my DS since November 2025 and out of nowhere, the bottom screen as begun to yellow. It didn’t arrive like this and it was completely fine when I bought it. I feel angry and upset that I spent so much money on it for it to suddenly degrade in such little time.

I’ve messed around with Rosalina but I know it’s not right. I can see those little lines and it looks like the textures of icons are messed up. (Pocket Derby’s BG is supposed to be green I think but is green?) maybe it’s my theme, I don’t know.. do I need to replace my screen and if I do, how do I go about that? Should I try out that “dry out” method?

Help!