Everyone deals with it differently.
I had a close friend die in a motorcycle accident years ago. It happened on a Saturday and I was in shock for a while but the next morning at church sitting in the pew after service the waterworks turned on. Cried like a baby for a few minutes then got it under control.
Personally I HATE crying and after that moment I realized it wasn’t going to do a thing to help anyone in the situation so I got ahold of myself and dealt with it in the most macho way I could think of. I shut up about it and handled it on my own.
That is what worked for me but it doesn’t make you less of a man if you need someone to talk to at all.
Sorry for your loss.
