To be frank, I do not believe in a definitive “afterlife.” I know I can be wrong in my theory, but these are my thoughts:
Every sentient being is reborn until it learns Life’s Lesson.
I believe Life’s Lesson is to learn unconditional love- how to give and receive it freely and openly.
When you learn unconditional love, your energy is suspended in a state of bliss until the end of time.
So, people who commit suicide would clearly have not learned how to give an receive unconditional love. As @bolwerk said, back they go!