QuickBooks offers a variety of reports which allow you to put your financials into focus. I'd be happy to steer you on the right path so you can get back to doing what you love.
Based on what you've described, I recommend running the Deposit Detail Report which shows your deposits, with the date, customer or supplier, and amount. You can also run the Invoices and Received Payments Report. This report shows the payments you’ve received and the invoices that go with them. I encourage you to check out this article here that shows you the available reports in QuickBooks. Here's a helpful article that shows you how to: