Aside from obvious stuff made for entertainment purposes, like speaking in English and singing about being royalty that real lions don't do
Also this topic is for what it gets right, not things that go against real lions
1: yes, female lions do outnumber the males vastly
2: dark maned lions exist in real life
3: lions can survive off of bugs due to how much nutrients a bug can have.
4: lions can befriend other species. I remember these two men who raised a lion as a cub and returned him to the wild. Years later they returned to see him and instead of attacking them he gave them a big lion hug!
Now doesn't that sound familiar?
In reality big felines are not brainless savage animals. Though I do not recommend having one as a pet even if you can afford it and live where it is legal to own one!
5: lion cubs are indeed very playful creatures!
6: indeed, lionesses do bathe Cubs with their tongues!
7: also lionesses do grab cubs with their mouthes to carry them!
Add to this if you have any other things I didnt mention