For most people having “Professional” content means: Never using humor, No GIFS, Memes, or Jokes, Only using corporate language, No personal photos, No personal insights, Never giving a strong opinion. This is especially true on LinkedIn and it’s probably the worst way to go about things. You have the most competition and the smallest audience. It’s rare that I tell people not to build a personal brand, but if you are wanting the above then social media might not be for you.