Howdy ... nothing wrong with the classics or flash arcade games. I really enjoy them as they tend to not require much thinking. Thinking and me don't get along Lol :D
Have you tried out some good emulators?
I've been enjoying:
https://bluemaxima.org/flashpoint/
http://www.flashgamearchive.com/
I find this to be fairly stable. Not always, but most of the time and I'm running (rocking) archaic hardware here.
Did you by some slim chance keep your stable flash without the updates?
https://www.adobe.com/support/flashp...downloads.html
Unfortunately, I did not and I don't really care.
People needn't poke fun at those of us that enjoy the nostalgic novelty games form the 'good ole days' (which are LONG GONE).
I WILL play html games but I tighten up and secure a special browser (FF -no-remote) separate from the one I use for posting just for the games; even from some risky sites. When I have some time and can think straight, I'll create a tutorial for those that aren't doing such. You don't even have to download anything other than what you already have on your computer, unless you require a vpn, I don't recommend using free versions - YOU are the "product". Proxies just suck for me.
I don't even have a smart phone believe it or not. Maybe someday, but I doubt it.
Take care.