When someone disagrees with you online & demands you prove your point to their satisfaction by writing a logically sound defense, u can save a lot of time by not doing that.
Dude, I've known u for ten seconds & enjoyed none of them, I'm not taking homework assignments from you.
You can ask search engines such as Google not to index your account by doing this:
1. Log in through your server's website
2. Go to Preferences > Other > Opt Out Of Search Engine Indexing
3. Tick the box and click "Save Changes"
(If you're on mobile you will need to click ☰ to see preferences)
Bear in mind this method relies on search engines obeying your request. If you want to be absolutely sure a post isn't indexed, use a non-public visibility.
More info at https://fedi.tips/hiding-your-posts-from-search-engines-on-mastodon-and-the-fediverse