Portuguese players are actually quite good and some of their names can be said to be famous names but their performance in the national team is very different at the club.
they seem to lose momentum and cooperation when playing at the national team level.
talking about their coach actually i see ronaldo more often giving instructions than fernando santos

This is very true! Fernando Santos is heavily criticized in Portugal, for always using players who no longer pay to the detriment of other good players. In addition to not putting players to play in their usual ways (so the "darlings" can continue playing). It was because of this bad strategy that they are now in the playoffs.