I'll share a few information about how QuickBooks matches transactions,  C_L-Concrete.

We have there different modes available on how QuickBooks matches transactions. For express mode, QuickBooks tries to match bank feeds transactions to any entries that are already in the related account. If no match is found, QuickBooks creates a new transaction for you.

 Whereas in classic mode, the transaction in the electronic statement matches the one you’ve entered in QuickBooks. If you're looking for the feature wherein you want to approve potential matches, you'll have to use Advanced Mode. If the transactions match, this will add to your register wherein you'll have the option to Approve them. The View Details option, displays information about the transaction, while the Not a match feature, tells QuickBooks the transactions don't match. You'll have to make sure to review each transaction, then from the Action column, then select either Approve, View Details ,or Not a match.

You can also select Batch Actions to quickly match them to transactions. If you’re not sure about a transaction, you can select it to view the details in QuickBooks. For more information about matching transactions, go through this article for your guide: Add And Match Bank Feeds Transactions In QuickBooks Desktop.

Furthermore, QuickBooks offers different kinds of reports that cater to your business needs. Learn how to set your report preferences. I've added this article for your guide: Understand Reports. 

Fill me in if you have further questions about your bank transactions. I'll always be right here to help.