Hi Pratham,
Thanks for your post. I totally understand your frustration on dealing with this issue. Based on my research, it might be because your current build number is higher than the build number in the channel you want to move to. Microsoft has noticed that when switching channels, Insiders can’t switch to a channel that is receiving builds with lower build numbers without doing a clean installation of Windows 11 due to technical setup requirements. Reference: What’s coming for the Windows Insider Program in 2023 | Windows Insider Blog
As a workaround, you can refer the following link to clean installation and back to Beta channel.
Switching from the Dev Channel
https://learn.microsoft.com/en-us/windows-insider/flighting#switching-from-the-dev-channel
Best Regards,
Ian Xue
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