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.

To help with his mortgage, utilities, baby supplies and medical bills, he’s asking fans to contribute to a GoFundMe … or, if they’re unable to pay with cash, he asks that they go watch his YouTube videos which will generate revenue for him and his family.

We told you about Buckingham going to the hospital with organ failure … asking fans to pray for him while sharing a selfie in which he sproted a nasal canula. He was also hospitalized earlier this month.