For Adobe Flash Player go to https://get.adobe.com/flashplayer/ .  Uncheck the boxes for Optional Offers before download.


For Adobe Shockwave Player go to https://get.adobe.com/shockwave/ .  Uncheck the boxes for Optional Offers before download.


Verify your Java is installed and up to date at https://www.java.com/en/download/installed.jsp


Tip:  Use a Secondary Browser for Flash, Java and Other Plugins:  https://www.ghacks.net/2016/04/28/tip-use-a-secondary-browser-for-java-flash-and-other-plugins/