Imac 27 retina i5 with 24 gb RAM and 1TB of Ssd

Hi, I tried to make a bootable USB for Sequoia and it says the installation was successful and suggested me to boot the machine while holding a option key. However, it starts normally (even though I was pressing the option key). Any idea why it doesn't boot/recognize the usb? Thanks 🙏

submitted by /u/Prior_Birthday906
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