Your motivations and heart appear to be in the right place, but your math is all wrong from the start. Even assuming we can, or should, pay down the national debt means you are framing your argument in the false language of the enemy.
If you have the ability to create money from thin air you still have to account for that money as it is spent into existence in the private sector and returned in the form of tax collection or Treasury bond sales. Both only serve to decrease the debt and cannot "fund" future spending. They are canceled by the debt that created them as a first-order accounting function, leaving "all" spending by the currency issuer as new money creation.
This means that the national debt (government's red ink) represents the only source of black ink the private sector has. It is our net money supply after bank debt is subtracted and our national savings represented in Treasury bonds. Yes, it is a big scary number, but it is not something we should, or could, want to diminish. The federal budget is nothing like our personal budgets because the federal government "creates" the money it needs while we must earn or borrow what we spend.
Many (most?) Republican donors understand how money works, but they don't want you to understand it. They would rather you not know that we could have nice things like other countries have by simply legislating them. They want you beholding to the bankers and employers for your bare survival. They, along with their media, economists, and politicians, will portray the debt as a "problem" even as they feed at the government's trough.
The truth is that our federal government, as the monopoly issuer of the US dollar, can "afford" anything that is available for sale and denominated in dollars. If it can be resourced it can be purchased by Congress without causing inflation, regardless of revenue positions. We could easily increase Social Security by half and eliminate the FICA tax as well. We could pay for Medicare for All as long as we can find the resources, Drs, nurses, hospitals, clinics, etc needed.
Yes, we have a drastic distribution problem, but not a "too much money" problem, so we should not attempt to reduce the money supply in total, which is what paying down the national debt would mean. We don't need the money from the wealthy to begin rebuilding our economy. They are irrelevant, which is their biggest fear. Their false positioning as "job creators" is their way of attempting to convince us otherwise.
