Hi there, @Anonymous.
The feature to get the reports about the expense transactions and your bank transactions is unavailable. You may see these features on the higher versions of QuickBooks Online.
No worries, there's no stopping us from making a creative way to evaluate your expenses!
You can get your bank transactions from your bank's website via .xlsx (Microsoft Excel file). Then, in your spreadsheet add a column to verify if you have already checked the specific transaction in QuickBooks Self-Employed (QBSE).
I've added this article that may help you in your future task: Handle duplicate transactions in QuickBooks Self-Employed.
Let me know in the comment section below if you have other question. I'd be very glad to help you further. Take care!