A few years ago people stopped using Flash but maybe some key website you want to surf is using it.
Chrome has Flash built in, but you have to enable it per site. To view the setting, go here:
The default is to ask first but you can block by default. The trick though it to click on the lock icon once you have visited the site in question. This isn’t always so obvious. Click the lock icon, then
Site Settings, or look for the Enable Flash setting straight away. See image below: