No, but in the meantime I finished the prophet implementation and reinstalled ubuntu, anaconda and pymc. Now the sampling speed is 7 mins on my machine, which is much faster than google collab. I guess I somehow made a mistake while installing pymc 
Anyways, thanks for the help and sorry for taking up your time with this nonsense!
p.s. I am working on an idea I have for improving the prophet model a bit, so once I finish that, I will post my repo and my results here. Maybe they will be useful for someone.