If you want actual Macroeconomics rather than the myths from this article try

https://www.amazon.com/Macroeconomics-William-Mitchell/dp/11...

>>"Given that even the proponents of MMT don't agree on what it is [..]"

I'm not an economist but I have read a lot of the MMT literature, including the available textbook (1) and it's a totally coherent framework.

Can you point me to some of those contradictions that you have observed?

(1) - https://www.amazon.com/Macroeconomics-William-Mitchell/dp/11...