Making loans on bitcoin is very risky. Are you sure that you can gain or make profit if you invest a capital from loan? Also those website or company that offer loan  always needs a collateral. If you lose the amount you loan,you also lose your collateral but it's up to you. I tried Nexo.io ,it seems ok but do your own study on how to avail their loans. Just a reminder,always be careful before making a decision.