You can find the original Facebook "pop" and its variations on the following platforms: : Offers the Facebook Pop Ringtone for mobile devices.
Several platforms offer the official Facebook notification sound in high-quality MP3 format: facebook pop notification sound download
For the purposes of this article, we are focusing on the iconic double-pop that most people associate with Facebook interactions from 2015–2020. You can find the original Facebook "pop" and
host numerous versions of the "Facebook Pop," including "Old" and "New" variations uploaded by users. Sound Repositories : Sites such as facebook pop notification sound download
If your goal is to change or silence the sounds within the Facebook app itself, you can do so through the app's internal preferences: