GoFundMe Composite

YouTuber Brandon Buckingham is asking fans for financial help because of his health issues ... telling them he's not sure he'll survive, and he worries for his family's future.

The star posted a heartfelt video to social media Saturday ... admitting to fans he hates having to reach out in his way, but -- with a wife and 11-month-old baby relying on him -- he feels he has no choice.

Buckingham explains he was rushed to ICU several days ago after waking up completely deaf with swollen feet and severe pain ... and, reiterating that he was ultimately diagnosed with acute systolic heart failure, kidney failure, and liver failure -- all of which he says doctors haven't been able to stop.

Brandon says he doesn't know what will happen to him or even if he'll survive ... bu

See Full Page