I wouldn't put dark world in my top MCU films, but I enjoyed it. I don't get why so many call it terrible.
As far as love and thunder goes, it was ok. I'm a big fan of Ragnarok but this one took the "silly" parts just a bit too far. It was late last night that I watched it, so I might be looking too into things. I think the reason it had the overly joking tone is it's a story being told by Korg. So he's telling it in his silly slapstick way. Did it work? In parts it did. I think there was a good story to tell, it just never took it self seriously enough until the end. If he could have struck a better balance, like Ragnarok, it could have been great. I need to watch it again, but right now I'd say it's in 4th place for the Thor films.