Can I add a password when Google Password Manager is accessed?

Say my computer gets stolen.
It seems, and please forgive my ignorance, that they could just get on Chrome and click in the Google Password Manager and view all my passwords! Paypal, Banking, Airbnb, Amazon, etc.
This seems like a huge security risk, an unbelievable oversight, and nightmare scenario.

Can I have Chrome request my password again before simply accessing this tab?
Thanks in advance!