torch.version.cuda indicates which CUDA runtime was shipped in the binaries (or used to build PyTorch from source). It does not tell you, if CUDA can be used as seen by the output of torch.cuda.is_available().
For CUDA10.2.89 you would need an NVIDIA driver >= 440.33 as seen here 33.
You could update the driver or, if that’s not possible, use the binaries with CUDA9.2, which should work using your driver.