Find your google chrome app on the android device you’re using.
Tap on it to open it and after that you have to tap on the three dots on the top right corner and then a list appears where you have to tap on the Settings option.
The settings tab will open. Now after the settings tab is open we will scroll it so as to reach an option ‘Advanced Menu’ and under it we have site settings.
So if you want to block some sites, this feature can be used.