Did Columbus find what he set out to find?

His official purpose for the voyage was to find a trade route to India. This obviously didn't work out, as there was a pretty large land mass in his way. In this endeavor we can safely say he failed.

His private purpose, or one of them at least, was revealed in his journals. In his diary there are notes and references to the Garden of Eden and Atlantis. It would appear that at some stage of his life, Columbus was exposed to the legend of Atlantis and was seeking it. The same is true of the Garden of Eden, but even in the 15th century people acknowledged that these places may be fictional, may be two terms for the same place, or some combination thereof.

No, Columbus never did find any of the things he was (chiefly) looking for.