There was a season 3? That is the most I have ever heard of this show, hilariously enough
I remember this cartoon. Season 1 killed He-Man in the opening episode and the rest of the season was the Teela Show, with Teela now being a mannish lesbian. Season 2 brought He-Man back but everyone held his death against him, and in the end he gets his powers back but Teela becomes the Sorceress and He-Man states he's not needed anymore because Sorceress Teela is around. Also Evil-Lyn became the main antagonist because Skeletor was sexist, or something.
Season 3 walked it all back and made He-Man the main character who gets with Teela, and Skeletor the main villain again, but by then nobody was watching it.