First, someone just killed themselves it's not good to make speculations.
Second, anyone that has seen firsthand the consequences of suicide KNOW that you don't need a "trigger" that will just make you attempt/commit suicide. You can just wake up one day, nothing significantly bad had happen and you say "today is the day" and that's it. From all the suicidal people whom I know who attempted suicide, none of them ever had one big key event that made them attempt, it's a multitude of things that build up over time. He had mentioned it here and there and it's clearly something he has struggled for a long time, his teammates were aware of it, and their testimonies say so.
I understand what you mean tho but hopefully, we can bring something positive out of a deeply sad situation and I am sure Vitality, knowing the org, will have psychological guidance for the players and staff. All we can do as a community is lookout for each other. There are a lot of Valorant pros who have shown signs of struggle with mental health and in forums/reddit people just shit on them which does not help. There's one BIG recent case and people are just still clowning the guy...