Can't install CUDA Toolkit 10.1 on Ubuntu 18.04

I followed the exact instructions on this page: https://developer.nvidia.com/cuda-10.1-download-archive-update2?target_os=Linux&target_arch=x86_64&target_distro=Ubuntu&target_version=1804&target_type=deblocal, and cuda-11 is installed instead, not cuda-10.

Hi, take a look at LivelyLinux 20.04 / 20.10 with NVidia. It has everything pre-installed.