Honestly if the Iranian government had any brains, they would arrest those who are responsible for what happened to Masah Amini. It seems pretty obvious that at some point she was hit in the head. Why do you need to hit a 22 year old girl in the head to restrain her, even if she got physical ? Yes police brutality is something that happens as over the world, especially in the US, but that's no excuse.
They should quickly investigate and arrest those responsible, just to clam down the crowds. Then they should implement reforms. Like I said, fine girls who don't wear hejab and after multiple violations suspend their drivers license, passport, downgrade credit, until they pay for and attend a class. This method will be alot more effective than what they're currently doing.
The issue is that the way Masah Amini was dressed is nothing out of the ordinary. She was wearing hejab, but just not up to the standards of the Islamic Republic. This is a very common sight all over Iran, but especially in the cities. So what are they going to do ? Arrest millions of girls for "improper dress" It's impossible. It would be like giving a ticket to every single driver that goes over 50 in a 50 zone. It's impossible.
The people in charge need to give their head a shake. Sooner or later, with millions becoming disenfranchised, the west will start pouring millions into training and arming, separatists,anti government partisans, etc. But at the end of the day it's the Iranian governments own fault. The west may light the fire and pour gasoline on the fire, but they're providing them with the opportunity. Anyways, they need to wake up, before its too late.