Exporting fossil fuels nets the government <$150 billion per year, while the federal government's debt is >$37 trillion (and growing by trillions per year). It's impossible to expand the sale of fossil fuels enough to make any kind of noticeable dent in the debt.
While 150 Billion isn’t going to solve our deficit issue it will help. By comparison that is almost 3 times the total $$ of military assistance we have provided to Ukraine since the invasion began.