Reconciling the bank is import, match, post. Most of the matching is automatic now.
Bank Account Reconciliations → new → Import Bank Statement (from a bank feed if set up, or a file). Match Automatically matches on amount, date and text. Then Reconcile with Copilot (version 24 onwards, online) proposes matches for what is left using the descriptions, and suggests G/L accounts for bank charges and interest that have no document. Review, accept, post the reconciliation; the statement balance and the book balance agree, or the difference is listed.
Set up the bank feed (Bank Account → Link to Online Bank Account) and statements import themselves daily. Reconcile weekly, not monthly, and month-end's bank step is ten minutes.