The real question here is: Does incompatible on Google Play store means it will not run on my device?
The answer is Yes and No. Developers can restrict which devices can install the app just by limiting the Android version (requiring Android 5.0 or more, for example) or by excluding Device Models (Galaxy S1 and Galaxy S2) or excluding Device Brands, as well (Alcatel, Huaweii and so on). This is usually done to prevent very poor performances on those devices, but this is all based on statistics. If they see a particular device has got just 500MB of Ram they'll say: Oh! My game is very detailed and requires at least 1GB of Ram to run, so I'd rather restrict the installation from this particular device as it has got 500MB of Ram only and it'll not run. But they'll never be sure of it, as they don't own that device and they didn't effectively test that game to see if it really worked or not. This is where they fail. Of course, the vast majority of disallowed devices will really NOT be able to run that particular game, but there's always a percentage of them who can easily run that game, probably because they're quite optimized, because of a good GPU, because of a custom ROM and much more.
So my advice is to never give up when you're seeing that message on google play, but to look on google for alternative places to download apk files. I will not link to them as I would infringe some rules, but some of them are apkpure, apkplz, apk-dl and even my site, even though mine is more about mod apk files, but almost every game/app you find has got both mod and clean version.
I was used to stick with apkpure, but I noticed it became really slow on downloads recently, so I changed my habits and moved to other sources, so never stick with a website but try changing and looking for better alternatives. Trust me, the net is full of nice sites we don't even know they exist, just because we stick with some and believe they're the best at everything so we don't even look for others.
Afterall, if I didn't think like that, I would have probably never found this awesome site called: iOS gods