I think Loki always suffers from little man syndrome. He is mischievous for fun, but when he realized what he was in the original Thor movie, thats when he went all crazy and wanted to rule Asgard. Then it was Earth. Now its anything.
He does have soft spots though. Even in the comics.
It was also explained that the mind stone really corrupted Loki, which is why in Avengers he was at his worse.
So far I am enjoying what I am seeing from the Disney+ series'. Nothing too groundbreaking, with Wandavision probably being the most original, but its pretty safe and follows idea of stories already laid out or a version of stories already told in comics. At this point, Ill accept it since it will be harder to let me down unlike other shows that have been discussed on here.