It appears that the story you came across is false—George Clooney is not dead. The claim you mentioned, stating that Amal Clooney tearfully announced his passing at age 64, originates from a clickbait site and is part of a recurring pattern of

 celebrity death hoaxes
edatv.news

Clooney is alive and continues to be active in both his career and personal life.
He recently made a celebrated Broadway debut in Good Night, and Good Luck, receiving praise and award nominations

Multiple reputable sites have confirmed he is well and debunked the death rumors outright
serenitywellnesscentre.com
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Why death hoaxes spread—and what’s true
Misinformation Tactic Reality
Sensational headlines Fabricated stories for clicks
Fake quotes and tearful announcements No credible sources back these up
Social media amplification Death rumors often gain rapid traction online
As confirmed by reliable fact-checkers, these are typical hoaxes, and there’s zero credible evidence that Amal Clooney made any such announcement

So what is happening with Clooney?
No reports from reputable outlets like CNN, BBC, or People Magazine about any death—none.
He’s actively involved in projects: