A few weeks ago I encountered some problems and, I guess, they are all connected with closing Flash Player in 2020. I have no sound in my videos on YouTube, VK and some other educating platforms, and that's really frustrating and irritating. Sometimes browser rebooting helps, sometimes it works with changing some website settings (allow Flashplayer to work), but I'm really tired of doing it every time.
If you wanna stop supporting Flashplayer, then create something alternative. What do the common users have to do now? How are we supposed to work?
YouTube hasn't used Flash Player in many, many years. For help with YouTube, please see https://support.google.com/youtube
For non-YouTube sites that DO use Flash (right-click on video content, if the Flash Player context menu displays, it's Flash), please see https://helpx.adobe.com/flash-player/kb/flash-player-games-video-or.html