I do not have much knowledge about collab.
This is my system
core i5 8th Gen
4GB RAM
2GB Gefore MX150
OS lubuntu
using a python virtualenv  for all installtions
Installed CUDA 10.0 (which is not mentioned on pytorch official website nor does NVIDIA Gefore for CUDA 10 being supported for my GPU MX150) taking a gamble for pure learning purpose.