This is called attention seeking behaviour. If you truly want to commit suicide, you shouldn't shout out to everyone and/or unknown people on the internet. These are questions that only you can answer, and you know that this is the case.
1- Should I commit suicide?
Yes or no, neither choice really matters.
2- How should I commit suicide?
Aim high, shoot for a Darwin Award if you're stupid or go for a Rube Goldberg Machine if you're smart.
3- When should I commit suicide?
Then when matters less than the how. If you're going to go out, go big, make it something worth remembering.