People who say, "The Fediverse doesn't allow search" are literally making that up. And it's easy to refute. Do a search for your username on Google or DuckDuckGo, and you'll find so many of your posts. In your Mastodon account preferences, you can also set how indexable you want to be. If Fediverse search was impossible, why is so much of the Fediverse indexable by Google?