How to install flash on Ubuntu 18.04

I am trying to install a flash player in Ubuntu. I followed the below link:

https://linoxide.com/linux-how-to/install-adobe-flash-player-linux-terminal/

• I enabled Enable Canonical Repository


• Update the system


• While using the command apt install adobe-flashplugin browser-plugin-freshplayer-pepperflash I am getting unable to locate package browser-plugin-freshplayer-pepperflash

Can anyone leave their suggestions here, it would be greatly appreciated?