How to cope with loss

[HeartStrings]

First time for everything I guess and this is just one of the crappy parts of life.
I've never lost anyone before now. My dear grandpa passed away on Saturday after months of pain, fatigue and exhaustion due to aggressive cancer a spreading rapidly round his body.
He was always active, independent and was always so positive and cheerful regardless right until the very end. Watching him deteriorate was painful to see.
We all knew it was going to happen. He was terminal, death was inevitable!
No matter how much I've tried to mentally prepare myself for what's to come it didn't matter because it's hurting so bad!
I can't believe he's gone. I can't cope, I don't know where my head is right now.
As I said I've never been in this position before and I wondered if anyone can share some coping strategies. If that's even possible with something like this.
I'm sorry if I'm blabbing on but I'm struggling a lot right now

I'm sorry for your loss, OP .

I have been in a similar place to you OP, but I don't have any strategies to pass on, apart from just let grief happen, it often feels overwhelming, out of control, mad etc. but you're in a process, even though it might not seem like it. Cry as much or as little as you want to. Hang in there, it gets easier to handle over time, and you may well find strengths in yourself that you never knew you possessed.