Is there a manual cuda install?!

I tried to install cuda toolkit over ubuntu 22.04
it crashes. out of ram and wsl crashs completely
i have cuda toolkit installed and working over
wsl ubuntu 18 and ubunt 20
So, i am wondering
is there an easy manual install?
i mean just copying
/usr/local/cuda-11.7/bin
/usr/local/cuda-11.7/targets/
and then
what symbolic links do i need and
what env sets to export