Fast online loans can help if you know when and how to use them. For instance, I would recommend take such loans only when they have offers like 0% interest rate for 1 month or 100% off and make sure you repay the loan on time!
I have tested such services myself and they work if you know that can repay the loan on time. I have used
this service in my location where I live, but they do have such services all over the globe.
Hope this helps!