Are Prenatal Classes Necessary?

Hello Mummies & Mummies-to-be, Would like some feedback and thoughts on going for prenatal classes. As I have decided to do confinement solo, I think I would be able to just cope w YouTube tutorials and advise from mummies with kids as my SIL has done it the same way. Can I get some advice and/or success stories as well? Haha would be very encouraging for me. Thanks so much in advance 💓