you've got nothing to lose idiom informal (also what have you got to lose?)
不会有任何损失;不会有任何坏处
used to say that you cannot make things worse, or cause any disadvantages for yourself by doing a particular thing
Why don't you take the job? You've got nothing to lose. 你为什么不接受这个工作?这对你不会有任何坏处。