You shall protect your strategy.
And do your very best to keep your opinions to yourself.
Telling other players how to play their hand or game when not asked to do so can be seen as rude and is incredibly irriting. Poker is a game of skill so a lot of players prefer to be left to their own thoughts.
Plus, by giving others unwarranted advise as to how you would handle their hand, you run the risk of giving away your well thought out strategy.
And you wouldn’t want to do that now, would you?