I didn't pay attention to friendlies matches while there were official ones running.
Argentina did well in their games against El Salvador by scoring three goals and Brazil were able to score a goal and win against England. Both teams had top players playing except of their captains.
There was also an interesting game between France and Germany with the latter team winning it by two goals, one of it scored since the beginning of the game.
Nice debut for Toni Kroos after returning back to Germany national teams after retired last several years ago, he made one assist for faster goal scoring by Florian Wirtz the match begin on few second. Another one goal of Germany scoring by Kai Havertz on 49th minutes, I don't too expected with friendly match although super big match between France vs Germany but both teams will not play on high intention such as official tournament.
Left one match later with friendly match before all players returning to their teams, some players have return awhile after getting injury and last information Harry Kane withdrew for next match against Belgium after getting muscle injury.