I have some issues with touch registration on my s21 ultra.
Sometimes it doesn't registrer the touch if i want to enter a website link or a conversation in my messenger (examples)
I have enabled "Touch sensitivity" in the settings, that didn't change anything.
I also tried to enable "show touch" in developer option, too see if there was something wrong with the screen,
but it does show that i touch the screen, but it still randomly refuse to open the things i want to open.