If you are having trouble downloading the game please tell me your make/model phone from the label.
Samsung devices later than 2015 all have 64-bit processors, but run on the Exynos platform and might not have a modern custom OS to run the game. If you tell me the device I can research and see if there are custom firmware builds for Android 7.1+.
For example, jfvelte (Samsung Galaxy S4 Plus), highest official OS is Android 4.4.4 but there are LOS 16 builds for it (Android 9.0 Pie). 2014/2015 was during the switch from 32 bit to 64 bit OS, but some stuff may have been taken down. I can't be sure unless I have model numbers to work with.