Unconfirmed Transactions – Bitcoin lost due to blocked transactions.

I was trying to transfer some bitcoins from my Bitcoin Core wallet to another online wallet. I made this deal about 3 weeks ago. And I think they lowered the fee too much. In my wallet, the transaction with 0 nodes was marked as “unconfirmed”.

I’ve read a few messages on this forum. I used the -zapwallettxes option and now that transaction no longer appears in the transaction list. But at the same time my wallet is now empty.

Are those bitcoins lost forever?

Thanks in advance for your help.

Fabrizio