Depend a lot on the situation and the events that lead up to the instances.
In real life? I don’t know your personal story, so I don’t have anyway of knowing if it was justified. I’ve had the same done to me, and in all honesty I deserved it for being a not so good person even though at the time I felt it was unwarranted.
In game? Don’t worry so much. People will whisper you and call you names because they have been trying to get into a group for an hour and keep getting declined. It’s nothing you are doing wrong, so don’t worry about it.
Now if you are joining keys that are way above your gear and skill level and ruining them, that is a different matter. You probably don’t deserved to be told to kill yourself (In fact pretty sure thats against ToS), but you gotta expect some anger on the part of the other members of your team. That is you deserving the stuff flying your way, not examples of toxicity and you being bullied.
I’m just giving my unsolicited advice as someone who may have been in the same situation you are, afraid to even leave the house who has overcome such insecurities. Then again our life experience may be vastly different, so maybe what I’m saying is not applicable.
And again no offense, but this post is kinda the issue. No one likes an insecure downer. Threatening to kill yourself is not exactly attractive and will lead people to want to distance and leave you.
My suggestion, is if you haven’t already, seek some proffesional. You sound really screwed up, no offense.
If your expression of feeling suicidal genuine, suicide is never the answer. In fact if you are feeling suicidal visit https://www.crisisservicescanada.ca/en/ for Canada, https://suicidepreventionlifeline.org/ for the US, https://www.nhs.uk/conditions/suicide/ for the UK, and https://www.lifeline.org.au/ for Austrailia, to talk with someone.
People aren’t as bad as you think they are. Most in fact are good people, or at the very least have good intentions. The people who are genuinely out to hurt people and create toxicity and strife are the small minority.
You may be in a dark place right now, and view the world and the people out to get you. But it it’s not the case. But I know from experience that people telling you this isn’t helpful, doesn’t make it any less the truth though. It starts with you. It is very likely that if you work on yourself that one day you see this.