I was thinking about this more today and realized most dragon stuff are kids' media, but if you're ok with that there's How To Train Your Dragon, American Dragon Jake Long, Raya and the Last Dragon. More adult is Dragonheart, Eragon, The Hobbit movies. There's also a lot of bad cheesy dragon movies.

Yes haha that's the thing. Trying to find an adult one is tricky. I just read that there's a live action how to train your dragon out next year 🎉 Hope that'll be fun.