My funds are lost. Is there a way to get them back?

Transfers can always be recovered and finalized. Assets are never lost unless they were sent to a wrong address/via an unsupported network.

Tokens are safe sitting in a failed transaction. They are locked in contract, no one but your wallet can access them. Just make sure to keep the transaction hash of your bridging transaction aside so you won't have to keep checking the explorer for the hash.