Policy takes years to implement and typically isn’t that visible in the short term. Considering the overwhelming opposition he has had from the Republican house, a conservative supreme court, and a billionaire lobbying and foundation network with vast political power, he’s done a surprising amount. So many people think presidents have unilateral powers that they just don’t in our system of government. These are the same checks that kept Trump from enacting some of his wilder flights of insanity in office. You can’t measure government change the way you stated because government just moves more gradually. Sure, so much more needs to be done, but expecting one president to course correct it as drastically in less than 4 years as would take to be blatant to your daily life is unrealistic. Trump gutted the EPA and other regulatory agencies in his presidency as much as he could get away with. Budget cuts and weakened power can’t just be reversed overnight. So Biden had to undo the damage then attempt to broaden their powers while the supreme court ruled on limiting them in his presidency. It’s not as black and white as you state. Biden isn’t perfect on a lot if issues, but he’s done way more for the environment than I thought he could with the head winds he’s facing. I will say this, they need to better job getting the things that have done out to people. With a news media who is owned by the same companies fighting change and the fractured state of information delivery in general, that will be a challenge.