Insider Program Switching channel

I hope this message finds you well. I am reaching out regarding an issue I am facing with my Windows Insider Program settings.

By mistake, I switched my device to the Dev Channel, but I would like to return to the Beta Channel. I attempted to switch back to Beta and even recovered my system once to resolve the issue. However, after an update, my system reverted to the Dev Channel again. I do not require the Dev Channel and would prefer to stay on the Beta Channel.

Unfortunately, I am unable to perform a clean installation of Windows, as my laptop contains private and critical data that I cannot risk losing. I kindly request your assistance in providing a solution to help me switch back to the Beta Channel without the need for a clean installation.

Please Microsoft team reach me out with the mail with solution i dont want to lose my data as i dont have any bootable drive