If you want to help them, you don't do so by cutting them access to the information. Iran is not a dictatorship, it's a theocracy. Like literally everywhere else, the more people are educated, the less likely they are to let religion govern their lives.
Young women are already protesting compulsory hijabs since December 2017: https://en.wikipedia.org/wiki/2017%E2%80%9319_Iranian_protes...
Now I understand that you're from Israel which makes you too affected to look at the problem objectively, but the best way to help young people under an oppressive regime is to stay the fuck away and let them do what they must. The worst thing you could possibly do is to give them additional boundaries that they have to go through to access the information from the outside.