“He knows everybody” and more useless wrong uses of phrases

I get it I know they are expressions but please use some caution.  How about ” he/she knows a lot of people”?  Makes more sense than saying everybody from a grammatical standpoint it is also more more logical.

How about the word “know”  do you really know someone?  My guess is you maybe getting to know someone or have a good sense of who the person is.  When you know someone my guess is you need to think to yourself; Do I know them to the point that I will point my name next to theirs and refer them?  Not that you need to stand by their work, things happen.  But what I mean is if you really “know” someone you should be willing to share them with others and be willing to risk a piece of your reputation when referring them.