What is Dracula truly about?

I’ve been reading it for a school paper and I’m really struggling with it. I think I get lost in the writing and the long monologues each character makes everytime they speak. There’s obviously something strong about the British fear of the Other, foreigners coming to do to them as they have done to countless countries. I’ve also read a bit about eroticism and homosexuality in the book but besides when Harker is in the counts castle and finds out he’s been doing the cooking and cleaning and how Every man in this book is more emotional than I would’ve expected for a 1897 publishing, I’m also struggling to come up with ideas.

My school is online so I don’t have the opportunity to discuss this with classmates and would greatly appreciate some help with this! Thanks a bunch :)