Your journal entry may be missing from the match screen due to a discrepancy in the account, amount, or date.
First, ensure the journal includes a line posted directly to the Bank Account as a Credit; without this, QuickBooks Online (QBO) cannot link the transaction. The journal date must be on or before the bank transaction date, and the amount must match exactly.
If the journal is already reconciled or matched elsewhere, it will be hidden from the list. To find it, select the transaction and click Match, then expand the date range and ensure the Record type filter includes Journal entries. Note that if your journal represents a lump sum while the bank shows individual employee payments, you must use this Find Match screen to select the multiple transactions that aggregate to the journal's total.
I’ll keep an eye on this thread if you have additional questions or concerns.