Cant get notification if missed call are been there

When i start the video mode in game launcher it automatically opens Samsung pay mini please help me with that

I'm facing problem about gallery, when i used see photos my device switches off automatically in my J7 MAX and while starting it i have to start it by pressing volume down botton and power button so please sort out this problem

when my phone is locked i can't turn on torch

plz give blue light filter in next update all phones have but not in j7 max