急に明るくもあったかも、逆に急に暗くなったりくすんだりもして違和感がすごいですね…
とりあえずウルトラHDR切って、先日教えてもらった明るさ調整したりできるバーで補正しますん

I believe you can change that with a setting called "Enhanced HDR brightness", but I am unsure of what it might be called in Japanese.

Language barriers are fun.

I looked it up and found where “Enhanced HDR brightness” is supposed to be in the settings, but my phone doesn’t have that option😭
Still, thanks for letting me know.