You are in deep s**t with︉ the IRS!
When you haven’t reported your taxes for seven years, you’ve kind of brought︊ these problems with the tax authorities on yourself! I don’t think you can avoid having︋ to pay all the money plus a fine, and they’ll probably take so much that︌ you’ll just have enough to live a modest life barely above the poverty line.
If I were you, I’d move out of the country. There have been other users here︍ before with similar problems, just within the EU, and their only solution was to leave︎ the country quickly.