How to properly install Adobe Flash Player on Linux Solus distribution?

Question

linux

I'm using the Linux distribution Solus. They have third-party software in the application center, where Adobe Flash Player actually lies. Installation, unfortunately, is not available now. They need to edit paths in xml files, update links. I decided to install manually. I downloaded the archiver from the Adobe site. Followed these instructions:

$ tar -xf flash_player_npapi_linux.x86_64.tar.gz
$ mv usr/lib usr/lib32
$ sudo cp -r usr /
$ sudo cp libflashplayer.so /usr/lib/firefox/plugins  
$ sudo chmod +x /usr/lib/firefox/plugins/libflashplayer.so

In Solus, /usr/lib is located in /usr/lib32.
The bottom line is that Flash Player is installed, but Firefox refuses to see it.
Actually the same problem with Google Chrome, which comes with Flash Player. It seems to be there, but there is no information on how to turn it on.

Answer 1

NPAPI has been disabled in chrome for a long time.
Starting from version 69 of chrome, flash on the page is forcibly disabled and is enabled only manually.
To allow, click on the icon in the address bar and select "Site Settings", there you will find the item Flash and set allow