opera flash plugins

I copied mlbinternational.com in Program Files/ Opera /program/plugins. but it still says missing plugin:(Is there any way to install the Flash plugin.
If you don't know, both Opera and Vivaldi browsers use Pepper version of Flash (PPAPI) that Chromium or Chrome uses, if you're noticing.
Download opera plugin - Adobe Flash Player Firefox, Safari, Opera The Web's favorite video and animation player, and much more programs.
opera flash plugins