They do; Rodri recently commented on the possibility of a strike

https://www.bbc.com/sport/football/articles/cx20lg01mndo

I don't think the players are the ones who deserve the ire though; the clubs and the footballing organisations are the ones agreeing to these additional games and tournaments. A time will probably come where players insert appearance limits into contracts to counter-act the higher and higher demand on them to play so regularly.

The Club World Cup itself is ridiculous in its new format and is simply a FIFA power play aimed at stifling UEFA's presence in football.