The phrase "blind alleys" means going down paths or pursuing ideas that lead to nowhere, resulting in wasted time and effort.
Sentences with «blind alleys»
The tall seating position of a crossover is a godsend for seeing over and around parked cars when easing out of blind alleys into traffic and 360 - degree visibility is good thanks to the airy greenhouse and large windows. (cnet.com)
i agree with you hope he gets his chance tomorrow even i will start him ahead of the ox who was a bit disappointing again this weekend again running down blind alleys without having a purpose (justarsenal.com)
Simplify his game, sometimes he just runs into blind alleys. (justarsenal.com)