It's bc of us humans who hurt them
the thing they told us is that humans expanded and as a result encroached on the cheetah property . This led to loss of habitat . Cheetahs would then get killed .
The other problem for cheetah is that Lions are very territorial and kill cheetahs that enter their territory . Since man is expanding , the forest is reducing and cheetahs come to the lion territory more often and getting killed . Sad really