dude
first, im sorry if this sounds dumb but what does ACAB mean? im sure i know the non-abrivated version or something like that, but um...(nvm ill just google it so i dont sound like a worthless idiot)
and if you didnt do anything, than dont feel bad, its not your fault
why feel bad for other peoples problems?
also
if you feel you need to be offline to get over this
than you emotions are more important