My half-brother killed himself when I was very young. I was too young to understand the situation and he distanced himself from the family, so I wasn't affected by it. We had met maybe two or three times.
I don't remember the initial reactions to it, but I did learn how people felt about it years later. Our father had some very interesting thoughts on it.
For context, my dad is the father of many kids. All of them have cut him off, are depressed, are absolute lunatics, or a mix of everything. With that in mind, my dad insists my brother was insane and that the genetics of his mom predisposed him to killing himself. Now, I have met his mother and I think she's garbage, but it was really baffling to me that a man who regularly abused his kids couldn't figure out why one of his many estranged children killed themself. I think the suicide affected him, but he can't accept that he played a role in it.
As for my own mom and the siblings, they really put him on a pedestal. I never knew my brother, but from what they say he was very successful, generous, kind, etc. I've heard some specific stories too, so I don't think it's just them being polite. I don't think they were close enough to be really affected by his death though.