what is SNS? The phrase 'to get people' generally means to understand other people. so if someone says, I honestly don't get people " they are probably saying it in response to something that another person has said or done (or not done) that the speaker finds incomprehensible. Also, please don't just post a snippet of a sentence without any context. Context is everything and with it we will be in a much better position to help you.

It means you do not understand people. It is often used as a comment such as your friend explains something a person did that is rude, weird, or it could be anything. You could say, "I honestly don't get people"

Thank you Phil. Your answer is very helpful for me. I totally understood it.

It's very poor grammar so we could insert some words to make sense of it e.g. "I honestly don't get (why) people (are like that)" or change the 'get' to 'understand' which would give us "I honestly don't understand people." Some examples might help "She threw her rubbish on the floor although there was a bin nearby. I honestly don't get people" You may also say here "I don't get why she did that" or Why do people do that?"