You can check here: to see which version you should install for your Mac and OS. Mac problem that needs a quick fix? Yes, but make sure you download Adobe Flash Player from the developer's site.
Whatever the reason, below we’ll discuss how to manage Adobe Flash safely and securely. And sometimes there is no way around installing Flash as you might still need it to run that lagging 5% of the web properly. Generally, yes, given that you download Flash Player for Mac from Adobe’s official website. Yes it is safe if you only download direct from Adobe.