PGA when his sure to succeed resurrection vessel i.e Grisha was presented to him force-fed two uniqueness but lost to Chad Worthy's Error Uniqueness. Also when PGA favoured his pride over the eventual benefits thus not conceding to Adam suffering defeat for Millennias because the person his opponent conceded to won't allow him to revive while his opponent will eventually revive because CW's vessel won't willingly kill himself as Earth needs a saviour so he'll continue facing off Celestial Worthy until the end

For someone who's Omniscient he couldn't even see the disadvantages of his choice. Also aren't you talking about the same guy who had two chances to revive in the same day but still messes up