Uhhhhh... What? Are we living on the same planet? The Senate is absolutely terrible. Not only is it breathtakingly undemocratic, the modern rise of the filibuster raising the threshold to 60% makes it even harder to pass any legislation.

The weakness of the Senate has abetted the expansion of the other two branches as Congress has ceded most of its lawmaking responsibilities. But there are still limits. There are so many other knock on negative effects too: inability to pass laws leads to more enormous omnibus bills, increasing the influence of lobbyists.

Simply deleting the Senate entirely would go a very long way to improving the structure of the US govt.

Edit: incidentally, the main thing I've learned over the years about this topic is that most Americans (not necessarily you specifically) have simply never questioned the received wisdom about the US Constitution that they learned in grade school and are maybe even incapable of evaluating it dispassionately.