Googleにドメイン/u/ユーザー名形式のリンク内のコンテンツをインデックス作成してもらいたいのですが、どうすればよいですか?

Help me index slug into username of source code?

I want to open index for this slug domain like this example: https://domain.com/u/toannguyen/activity (example link), what do I need to do in the discourse source code?

Currently, when I submit this type of link in Google Search Console, it says it is blocked from indexing. Hope to get help?

Thanks team so much!