I had previously submitted my sitemap to Google. The structure of the URLs in it is
The username there is a URL slug generated based on the user's name. There is also another URL associated with each user
https://example.com/username/branches. Google also indexed it.
I recently changed my whole website design and URL structure.
The first URL
https://example.com/username is same but
https://example.com/username/andOtherUrlsAppendedtothis is new URL that we designed to replace the second.
Also I have almost 56,000 URLs that follows the old URL structure. How can I remove those URLs from Google index?