I was looking at staking my ethereum. The interest rate seems good and I found BlockFi.com which seems to be around 10% (not guaranteed rate though). Is there a risk of losing coins and is staking recommended? For Ethereum, which site pays the highest APR and is the most reliable/safest?
I don't know a platform that provides ETH staking with high APR, but I can give you information so you don't have to worry when you want to stake ETH, you can visit the official website here
https://ethereum.org/en/eth2/staking/There you can get the information you need, because the explanation there is clear and detailed.
If my advice, you are better off looking for other coins like Zilliqa or Atom that have a high APR than ETH, not only high APR but also easy, you just need to install the wallet and can staking easily.