No worries. I’m no savant but it helps to understand the basics. You didn’t lose shares, they contracted in value. The only way you would get screwed is if you cashed out now.
The best you can do is put it in an SP500, set it and forget it. There is no 20 year span in history where this did not lead to gains that were better than the prevailing savings rate. To eak out even 1-2% more above that increases your risk profile significantly, so for most it’s not even worth trying. This is why women tend to do better than men in the stock market, cause dudes are wired to take risks.