Sorry for your loss man. Ma grandpa died in 2017. They all say, it gets easyer with time, but it doesn't. I am not a beliver, but still, deep down I'm hoping he is in a better place.
You are never alone, my brother. If you need help, advice or just an anonimus place to vent out, we are all here for you. Never forget, legends never die, and grandparents, are the biggest legends out there.