Hey by the way if you're an American and you're against the war, it's your duty to call out the shit that is insane and monstrous and wrong.
If someone says something that you know to be wrong, say something. Push back on it. Iran didn't start this war. They haven't been at war with the US for forty seven years. The US didn't have to support Israel's strikes with this kind of escalation (we haven't in the past, in fact Trump hasn't in the past). The Iranian people are not looking to the US as liberators. The Strait of Hormuz was always going to be used tactically in this way, it is absurd to suggest that the Iran would open it because it is the single best method of leverage they have to resist annihilation from a superpower. Bombing civilian infrastructure is a war crime. Saying that an entire culture will be destroyed is genocidal.
There is no moral reason for the US to do this, the reasons that the US is doing this are oil and to destabilize the region. Hubris, cruelty, and a vile old man who wants to give himself a hero's legacy play a part as well.
You should be saying out loud to the people around you "This war is unjust, unnecessary, and cruel, and every reason our leaders are giving us to tell us why we're doing it is a lie."
People should know you feel this way. Some people will feel the same way, and it will be good for you and for them to know that you're not alone. Some people will NOT feel this way and it will be good for them to know that there are people all around them who haven't bought into the violent propaganda of empire.