There is another option. It is not doom and gloom, and it is not necessary to fall deeper in the trap.
Iran should drop its self-destructive foreign policy and its funding of Shia militias in neighboring countries.
Reach out to Turkey, Pakistan, Afghan Taliban, Sunni Arabs (aside from Gulf,) and most of all accept the current foreign policy was misguided.
By itself, Iran will be straggled and finished off, but together we can fight back against this.
Unfortunately it doesn't work that way. US and Israel have set a goal to destroy us. We are only in Iraq to deter attacks by US, we are only in Syria and Lebanon to deter attacks by Israel. If you know Iranian history, we have been in a defensive stance fighting for survival since the 1400s. The minute we pull out of these countries, we are doomed.