besides i have buy the 4k subscription

after updating September security patch in my s21 fe .my youtube , whatsapp,instagram is not responding wellwhen i open my youtube it stucks at a pointit goes color full like bule red mix colour in youtube screen and whenever i open whatsapp like ...

my s21 getting very much network problem

how can i solve this problemandfor thepast few days my s21 fe giving me little vibrating electric shocks when i tuch in the mattlepart while changing?is it related?should i go to service center!?

my samsung s21 fe giving me a little electric shock while tuch in the side of my phone ( in the side metals)is it normal ?