Questions before repealing Obamacare

What does it mean that the U.S. House of Representatives are using an arcane procedure called budget reconciliation to repeal Obamacare?

I read that only parts of the law will be repealed, not the entire law governing Obamacare. How does Congress repeal only parts of a law? I understand that Obamacare is a questionable law because it was written by the healthcare insurance industry lobbyist for their benefit only.

In many states, Obamacare has only one insurance provider and is monopolistic and inefficient. Moreover, healthcare insurance costs are still increasing with very high inflationary rates. Will healthcare insurance eventually bankrupt our federal government?

Why doesn’t the federal government provide a means-tested public option healthcare insurance plan with progressive rates depending on household income, such as a Medicare account for every citizen?

Jonathan A. Melle