LG G4 Youtube not 4K

finally know that I am not alone to notice that In 2025, the LG G4 still has the above behaviour. People keep telling to manually switch to 2160p but the fact is, it is already in 2160p. It is not blurry like 480p, but side by side to other brand, it is apparent it is not used to its full potential. Even the UI, caption, search bar text, etc which don't depend on bandwidth of internet connection, are not "pixel for pixel sharp"