Most people would, if they could, avoid taxes legally to the maximum of their ability.

You US folks have created this monstrosity yourselves, too. You let lobbyists (who work for the companies that the richest own) influence politicians, you allow companies to have personhood and other such nonsense.

Even the politicians you get to vote on are placed there by said lobbyists and thus the companies that pay for them.

Institutionalised, legal, and widely stimulated and motivated corruption is what causes all of this to happen. The rich make the rules, you not liking it can't be fixed because the rich decide what "fixes" are available for you to vote on.