DeFi has traditionally resided on Ethereum. However, there are currently a large number of blockchains available, all with strong DeFi ecosystems.
DeFi DApps can be hosted on almost any network with smart contract functionality. A popular option is BNB Smart Chain, in addition to Fantom, Solana, Polkadot, and Avalanche.
Research will be necessary to locate projects and DeFi protocols. You can learn about fresh chances through browsing websites, online forums, and instant messengers.
However, you must use whatever information you obtain with utmost caution. Be vigilant at all times and confirm the security of any project you read or hear about.