If you have borrowed LUSD on Starknet, here are a couple of options for you. Ekubo Protocol and JediSwap are leading DEXs on Starknet that provide concentrated liquidity options for LPs. You can check out the USDC-LUSD pool on Ekubo Protocol and the LUSD/USDC pool on JediSwap. Until December 31st, all borrowing through Nimbora, myBraavos, and argentHQ is exempt from L2 gas fees.