Been facing this issue "You have created a new client application that uses libraries for user authentication or authorization that will soon be deprecated. New clients must use the new libraries instead; existing clients must also migrate before these libraries are deprecated. See the Migration Guide for more information." How to sign in with google now if they have block client ID for new users
as google will deprecate their old sign in library https://developers.googleblog.com/2021/08/gsi-jsweb-deprecation.html
you can now implement their new google service identity SDK https://developers.google.com/identity/gsi/web
or if you are using react, I made a small package https://www.npmjs.com/package/@react-oauth/google it is using the new SDK
