Just a few recommendations to look at :)
BOOKTUBE - ARIEL BISSETT
Ariel is one of my favorite you tubers bc she is herself, funny, nice and has great book reviews! She's amazing!
MOVIES - HONEST TRAILERS
Honest Trailers is a popular channel because it gives honest, and usually funny feedback of the movie in a trailer. Plus, you chose what the next trailer is in the comments!
ENTERTAINMENT - WATCHMOJO
WATCHMOJO is one of the other great channels. They do top 10 everything, Disney female leads, musical instruments, Kingdom Hearts, celebrity meltdowns! Very addicting to watch and interesting.
BOOKTUBE - READBYZOE
I recently discovered Zoe's channel. She, like Ariel, does book reviews and even her own writing as she's writing a book. She has great videos, is very happy, and is herself.
MOVIES - MOVIEMUNCHIES
MOVIEMUNCHIES is entertaining, while also educational. They don't have much dialogue like in WATCHMOJO, and not many videos. My favorite is: Disney Princesses Singing In Their Original Languages
MOVIES - HISHE
HISHE: How It Should Have Ended. This channel takes movies but changes the ending. Also while keeping it funny with good animation. My favorite Super Cafe: Superman and Batman having coffee.