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[LOTR] What the fuck is up with Radagast and the two blue wizards?

I've only watched the movies so I might be missing bits but the 5 Wizards sent by the gods were supposed to help fight against Sauron, Saruman went all evil so we know that, Gandalf does fucking everything while Radagast does nothing in the woods then there is these two blue wizards who aren't really covered, Why isn't Radagast or these two blue wizards doing anything? ***Fucking Radagast***
gpt
Tolkien's early research into the Blue Wizards indicated that they had failed or been corrupted, but later discoveries implied that they were responsible for weakening the Easterlings, which in turn weakened Sauron's forces during the War of the Ring. The reason we have so little is just that Tolkien was working from a set of documents heavily focused on the West, on Gondor and Arnor in particular, and thus did not record their actions.

Radagast cared for the flora and fauna of Middle-earth, the *olvar* and *kelvar*. Originally these were watched over by the Eagles and the Ents, but the Eagles were growing more reclusive, and the Ents were dwindling, so Radagast was sent. While Gandalf and Saruman were to focus on fighting Sauron with the Free People, Radagast saw his role more as preserving the good against Sauron's corruption, and focused on the natural world rather than the Children of Iluvatar.