I am not a Trump voter, but not all he did was bad. Walking out of the Iran nuclear deal was definitely one of the bad things Trump did.
At this point I wouldn't blame Iran for trying to get the bomb. Israel is going to attack them, and maybe the US, if they have no nuclear deterrent. It has worked for North Korea for years.
If we had not overthown Mossedegh in 1953 it is very unlikely the Mullah would ever have taken over and this entire situation would not exist. But western capitalists wanted the sweetheart deals on Iran's oil. So the CIA and UK couped the Iranian government and put in a dictator who suppressed the Iranian people massively.
The only place Iranians could meet in privacy was the mosque. 26 years later Iran got a fundamental religious revolution.
We have no one to blame but ourselves.