[2021] I can´t find the Zealot Osgar (Help)

I´ve gone through probably the 60% of the game already or so, i have collected excallibur, have defeated all legendary animals and i am currently looking to defeat all the Zealots on the game, so far the only one that is left is OSGAR, and i have been scanning the zone for hours now, i don´t know what happened but i cant find neither his body or himself alive, it´s pretty depressing to think that everything so far is doomed and i would not be able to finish the game with this problem.