Hello. I see different platform like nexo, blockifi, etc... that can borrow you crypto or stablecoin. I'm here to ask if you have a strategy for example you borrow btc with an interest rate of 6% and then you use it on defi with 8% APR. Thanks for helpful. 
Get a loan and reinvest it is not the best solution if you want to earn money in cryptocurrency, remember that crypto is fluctuating, if you choose the wrong asset then you will regret your decision. You should join in crypto using side funds, not loans or your main funds because this is so dangerous. Also, don't sell your real asset only for join in crypto