I spent money on three gtx1660 ti for 430$ each from china and I've only make 150$ back today, I'm worried when will I break even because so many people told me I did the wrong thing, they told me bear market is that I will never make my money back, is this true?
You can sell the cards and make some of the money back if you really get into a pinch.
Depending on your electrical costs you should only buy cards if you can break even within 6-8 months (at 1/2 the suggested earnings) in my opinion.