Review of YouTube Subscriptions Importer: Copy Subscribed Channels to Another YouTube Account
This is the safest method, as it relies on Google’s official services, but it is not fully automated. open the extension
YouTube account in the same browser, open the extension, and click "Subscribe" or "Import" to begin the automated process. open the extension
. The tool will automatically navigate to each channel and click the subscribe button for you. Option 2: Semi-Manual via Google Takeout open the extension