If you are trying to install Flash Player because a website or game asks for it, that content will no longer work, and installing Flash is not recommended due to serious security risks.
I can't install Adobe Flash Player – What should I do? no puedo instalar adobe flash player
Important notice: Adobe Flash Player reached its official End of Life on December 31, 2020. Adobe has blocked Flash content from running, and major browsers (Chrome, Edge, Firefox, Safari) no longer support it. If you are trying to install Flash Player