An old friend of mine died 6 years ago by drowning. It wasn't suicide, he was pushed into the water and he got stuck and couldn't go to the surface. It was on the first day of summer break of 2013 and I regret not talking to him more, as we mainly talked about videogames.
I remember his favourite game series was Bioshock, and his favourite one was Bioshock Infinite.
He was still young (14 iirc) and he was the only child, so his parents are going through great grieve to this day. I felt horrible I couldn't go to his funeral as my parents couldn't take me and my other relatives didn't offer to take me with them.
That being said, spend time with your friends as much as you can, enjoy your time with them because it's always unknown when their time comes.
My condolences to you and his family and friends. My advice is the only option I had back when I lost my friend (and my grandfather but that's a different situation/topic) which is to not dwell on these losses for too long or it'll keep me from living my own life too. As much as I loved them, moving on is good for the sake of happiness and living life better.
Best of luck! 💕