Wallet balance is off by -13% after calculating balance from downloaded spreadsheet of all trades

I started trading in May, deposited US$12,000, traded misc. coins, sold my last coins today and downloaded all trade history. Spreadsheet calculations show a much higher value for my wallet (I have never used any other wallet or exchange).

What am I missing?

I calculated the profit/loss in the spreadsheet, accounted for all fees, and found this big difference.

When the last coin sold, I saw my wallet balance drop a lot, even though the coin went for a big profit.

I calculated the profit/loss, accounted for all fees, and found this data:

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https://preview.redd.it/hy05qdzr5tg71.png?623&format=png&auto=webp&s=8dd22fdd4e15cf04ca0cc51e80837cca8dcc36d8