Another thing that Ragnarok did was rejuvenate Hemsworth to the character and the MCU at large; he was quite unhappy with the character up until that point, but has been given more creative freedom since, and he's stated before the Thor 4 reveal that he was more than happy to return after Endgame.
Yeah, it definitely sounds like he wasn't having a lot of fun before Ragnarok. It was definitely a pretty dry character. I thought how Thor had been portrayed worked fine because of his background and as a completely different attitude of a character from the other MCU characters but I can see how it wouldn't have been as much fun for Hemsworth.