Every single oil company recorded record profits for 2021, so it's not inflation that's causing your gas to be $4/gallon, it's capitalism and greed.
Exclusive: oil companies’ profits soared to $174bn this year as US gas prices rose
https://www.theguardian.com/business/2021/dec/06/oil-companies-profits-exxon-chevron-shell-exclusive
Exclusive: oil companies’ profits soared to $174bn this year as US gas prices rose
https://www.theguardian.com/business/2021/dec/06/oil-companies-profits-exxon-chevron-shell-exclusive