Friendly matches are not a worth to see games, they were played without fierce, and we see so many tries of players and tactics.
Some games are played with subs players and the one with starters are played without the real energy of a game, no one its gonna risk a injury. Thankfully its gonna end soon this part of the season called pre-season.
Not much people love to watch preseason games because of the perception that they’re just playing for fun and no much energy is been put into the game to win. For some teams it might be so while some other teams use that as an avenue to test their newly signed players or to try out a new tactics. At least, we should be happy that football is back after a long break, preseason will end soon and the real competition will begin soon also.
this is not the reason in my opinion
the reason why, in my humble opinion, people don't watch the preseason is the heat and the holidays
let's say that football, as I understand it, is exclusive winter entertainment, in the summer ok I like reading and talking about it, but I prefer other evening entertainment (which I can't do during the autumn/winter part because I work)