There's an alternate reality in which last summer, instead of trying to kiss up to Saudi Arabia, Biden instead managed to conclude a nuclear deal with Iran which would lift sanctions and allow more of that country's oil into the international markets, and also where the Iranian government saw the agreement as an opportunity for normalization (and money) and was able to put aside its own political reservations and take the deal.
That deal and the higher volume of Iranian oil on the market would drive a wedge between Russia and Iran, which might prevent Iran from supplying Russia with its drones. It also would freak out Israel and Saudi Arabia, and probably push the Saudis even more in the Russian camp. The Saudis would still try to get OPEC+ to restrict production so oil prices would go up, with if sanctions on Iranian oil were lifted that would be less effective.
On the other hand, a new better relationship with Iran, and also more dependence on their oil industry keeping gas prices down, would put the Biden administration in a harder position when the current protests erupted. Unless the protests would not have happened or would be less severe if the lifting of sanctions on Iran improved the Iranian economy.
I'm not sure if any of the above is what would have happened, or if it would really have played out as it does in my head.
