I want to learn Ethical Hacking, how do I do it?

Hello, I am 18 years old, cybersecurity and everything that has to do with it attracts my attention, is it true that you can hack social networks such as messenger, facebook or WhatsApp, and if you can, who taught you? or how did they learn it? sometimes I think that people who know about it don't want to teach, they are jealous of their knowledge or maybe they don't tell how they did it.