Global oil prices are higher than during Trumps time. US prices are global prices.
https://www.statista.com/statistics/262860/uk-brent-crude-oil-price-changes-since-1976/
Part of this is due to greater global political uncertainty and perceived risk, much of which is, IMHO, due to the incompetence of the Biden administration.
West Coast refined products (gasoline, diesel) are more expensive than the national average because of greater taxes and regulatory burdens. Especially so in California.
And the price in CA will jump when they go to ‘summer’ fuel.