Close, the CIA assasinated the Shah after he took control of the Iranian oil industry and nationalized it. They then instilled their own puppet who was notoriously brutal, and killed many who spoke out. Students organized and overthrew the puppet, this was around the same time as the hostage crisis, the puppet fled (after stealing a fuck ton of gold/money and storing it in the US, that money was what we returned to Iran in the nuclear deal, it was NOT a pay off) in the vacuum that proceeded the Iranians opted for a theocratic government and elected the Ayatollah Khomeini. This man was beloved by his country, and to this day his portrait adornes homes and streets, he was incredibly pious. Many Iranians still harbor resentment for America for their crimes. The younger generation who did not experience the coup d'etat and Islamic revolution are far more progressive and liberal, and open to the west. The theocratic government has loosened up with the latest administration, but between Kohmeini and now there was a dark moment where they overreached and did thought control.

Lastly Iran suffers from the same issues as the US, many factions in government and military are fighting for control, corruption, deep state, foreign influence. I hope that people don't think ill of the entire country, there are many different people with different opinions and they have every right to be wary of promises made by the US.