YouTube often stores your "home" location in cookies. Clear your browser cache before activating the proxy.
If you choose to use a dedicated proxy service, you can configure it manually on your operating system: For Windows 10/11: Open and go to Network & Internet . Click on Proxy from the left-hand menu. Under Manual proxy setup , toggle Use a proxy server to On.
If you want to choose the right tool for your specific setup, let me know: