Dragonheart was my fav fantasy movie as a little kid. It's pretty lighthearted despite the death and sacrifice plot, def made for kids in mind I think. I loved that dragon.
Pan's Labyrinth I really loved when that one came out.
A Monster Calls is another one I watched and enjoyed recently that kinda has a slightly similar feel to Pan's Labyrinth, but much less dark and a less involved in it's fantasy elements, also a lot less fantasy than the other two, more like a more modern fantasy (though I was a fuking mess after watching it cause I went in not knowing what the movie was about, annnnnnnnnnnd the reason I was watching a movie was for a break dealing with someone on the final most aggressive stages of cancer so fuking aaaaaaaaaaaaadsjhdasdkjaaaaaaaaaaaaaaaaaaaddddddhhhhhaaaaa)