Kagi has an option to search the Fediverse. This makes it a lot easier than specifying a site in the search query, which would also limit the results to a specific instance.
Why YSK: This lets you easily replace searches like “some topic reddit” with Lemmy!
Yes. Its 10 bucks a month though for it to be useful. There is a 5 bucks plan but its limited to only 300 searches.