How to act in corporates

You have answered your question already.

If you don't have anything to add, dont. Don't speak up for the sake of it but never hold back any advice you have because u feel intimidated or embarassed. Most people know who all are just bullshitting and dragging down the meeting, if not, fuck em.

P.S. I'm in probation period for context

Aisa sound kar rha hai jaise placements mein GD rounds type.