This is what happens when your team has absolutely no creative players. Just a bunch of athletes who can run well and press the opponent is not enough.
Jahanbakhsh, Taremi and Azmoun are very average players technically. JB has some intelligence, but his physic and technique lets him down. The other two, forget it.
Ebrahimi and Ezzatollahi have too many defensive duties and no eye for attacking opportunities. What is the difference between these two and Jalal Hosseini? Nothing. They're all defenders.
Iran is actually playing well as a team in containing Russia, but this toothless approach and lack of creativity is waaaaaayyyy too painful. It's been 6 years and there has been absolutely no improvement in Iran's scoring/chance creation abilities.