I'm not "making excuses" for something I have nothing to do with and have no control over. That's a dumb phrase to use. What I'm saying is that gas prices actually aren't all that high, historically, and people are reacting now because those prices dropped artificially lower during the pandemic.
We have to trade with the world, with countries that like us and countries that don't, whether we like it or not, and there is in fact no way to be anything "independent," nor would we want to be. And as far as "countries that would do us harm" are concerned, a) there aren't many such countries, and b) trading with them is one of the best ways to dissuade them from being our enemies. Do you know the saying, "When goods cross borders, armies do not?" We're a mercantile nation. Isolationism and paranoia will only hurt us.
You're partially right in that the 2020 election was more about voting against one candidate than voting for the other. However, a LOT more people voted for Biden because they loathed Trump than the other way around. There simply wasn't, and isn't, all that much to like or dislike about Biden. I called him "Joe Vanilla" during the primaries because he was the "safe choice." The Democrats ultimately chose him because there wasn't any Republican dog whistle attack that could be deployed against him, unlike Sanders (SOOOOOOOCIALISM!!!), Warren (an uppity bitch, just like Hillary), Buttigieg (gay, unnatural, pervert), Yang (COMMIE!), or Bloomberg (New York! We hate New York!!!).
The social and structural problem that remains is that we still have 75 million (+) people who were and still are taken in by a con man who was no more fit to be President than he was to fly the space shuttle. They observed his abhorrent, nasty, and often childish behavior and voted for him anyway. That suggests that we as a nation and culture are completely screwed.