To receive Goerli testnet funds, you can use a faucet or just buy GETH with real ETH.
Need zkSync testnet tokens? Since zkSync faucet is giving not many testnet ETH, you can also bridge Goerli ETH to zkSync testnet.
For Base Goerli ETH, refer to this post.
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GETH Faucets
The best one: GoerliFaucet.com (UPDATE: You need a Alchemy account to use this)
Buying GETH
Down/empty/old faucets
These are currently out of testnet Ether or the website is unreachable and it’s unknown if they come back online.