Now, you can get Goerli ETH for a fraction of the gas cost of LayerZero's Testnet Bridge. TLDR: you can swap native ETH on Arbitrum Mainnet into synthetic GoerliETH (GETH) which gets unwrapped by Faucetful into native ETH on Goerli.
Check out my post for more details on how Faucetful works or how to deploy your own permissionless bridge: https://aurorabykunal.substack.com/p/announcing-faucetful-the-cheapest
NOTE: I'm strongly against calling this a public good but given the circumstances, it is the next best option. So feel free to LP, trade, or even arb between the L0 and Faucetful wrapped versions. 🙃