Here is the simplistic version of what happened
Trump pressured the Saudis to produce more oil thus driving down the gas prices and gas prices went down. Note that it also put a strain on the US oil as that cut into their profits.
Covid hit and since no one was travelling there was an excess amount of oil/gas out there and prices plummeted more.
Once that happened the US drilling started shutting down due to... LACK OF PROFITS. The combination of the Saudi's making more oil and covid caused this.
That lead to less oil/gas production and thus gas prices going up again, you know the supply and demand thingy.
US Oil production is up since Biden took office, that is a fact. The drilling that shut down has slowly started back up, but that takes MONEY and TIME. There is very little need for more drilling operations and permits as we have more than enough out there than we can currently utilize.