Is there a way to exclude personal bank accounts when running a business balance sheet or p

As longvas you never add the personal account then it will definitely not show in the business balance sheet.

But since you already have it in the books you might change its type to equity and make it a sub account of Owner Equity. It will still show but it will be transparent that the balance is a personal contribution of equity.  Bank Feed would no longer work for this account but you should not connect a personal account in the business but connect it instead in a free Mint account from Intuit