DUALBOOT HELP

Hello everyone. As you know, I was planning to dualboot MacOS Big Sur with Windows 11. I partitioned the drive in disk utility, I created a bootable USB and installed windows in the partition I created. However, after installation, I can't boot into OC menu, it boots directly into Windows, and I have erased the usb I used for MacOS to use it for Windows as I have only 1 USB. Any help?

submitted by /u/Own_Competition1233
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