If you think someone must die, please first use a hotline.
https://www.pleaselive.org/hotlines/ has 24/7 help lines.
If you take your own life with a message saying why, what put you
in such extreme duress, you will be forgiven and others will understand.
If you kill others you are unlikely to survive and you will be
demonized.
Suicide is very undesirable, the ultimate last resort, but much
better than killing others. Your life is in your hands.
No one else should be in charge of your life. No one else should suffer
from your problems. Just as the problems and pain of others should not
cause you pain, your problems and pain should not cause the pain of
others making you the problem.