If your transaction hasn't been broadcasted anywhere then yes. You should abandon it. Let me throw a tip; after you enter your paying address and click “Pay”, click on “Advanced”  --> “Finalize” --> “Export”.

After you've copied your signed transaction, open blockchair.com/broadcast and broadcast it from there.

Generally, Dogecoin is an abandoned project, I'm surprised you accomplished on syncing your node. To me, it was never syncing. (1kbs/sec ↓)