Check out Google’s Community Mobility Reports that provide insights into how people’s movements in countries around the world were altered during the lock down period of COVID-19. Also you can see mobility change since countries have eased movement restrictions.
The reports use aggregated anonymized data from mobile phones to chart trends in movement over time. They show how visits to different venues (like retail, groceries, parks, transit stations, etc.) have been effected by government lock downs. Check it out!
An overview and how to understand the data can be found here.