“Capitalism” does not mean “every use of money that I disagree with”.
It also does not mean “greedy immoral bastards who sell political influence to the highest bidder”.
There are lots of corrupt things about the US government. That’s not capitalism; it’s corruption. It can happen in any form of government; in the US it just happens to be much more visible.
However, Capitalism inherently rewards corruption. If you are a corrupt politician and earn $10 million through corruption you can invest your money and the capital gains alone will exceed any politician's salary and this is ignoring that you will earn more every single year due to compounding.
You can burn the amazon down and then invest the earned or saved money and economists will tell you, you are doing well and that you have a god given right to that wealth.
Communism doesn't even try to address the root cause, it's actually making the problem worse by concentrating everything at the top.
Almost like all the "isms" are total garbage. The best route forward would be to examine all the "isms", find the parts of each that can be brought together to make a new path forward. Unabashed capitalism is a scourge, just like any other "ism" if left unchecked.