ANSWER:

This is not authentic.

https://islamqa.info/en/answers/152611/the-reports-which-suggest-that-the-prophet-blessings-and-peace-of-allah-be-upon-him-contemplated-suicide-are-flawed-in-both-their-chains-of-narration-or-their-texts

Sheikh I have heard that when the revelation stop coming to Prophet Muhammad (PBUH) for sometimes he felt to commit suicide?

Biography of the Prophet salla Allahu alahi wa sallam | August 21, 2019 3:40 am
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Is it authentic that the soil touching Prophet صل الله عليه وسلم(probably it means the soil in his final resting place) is افضل than the Arsh of Allah swt?