Because Samsung ceased official support for the J2 after Lollipop/Nougat, many users turned to the Android community for a solution. This is where "Better" comes in.
update from Samsung. Its official software lifecycle ended with Android 5.1.1 Lollipop While newer models like the Galaxy J2 Core android oreo for galaxy j2 smj200g better
For a phone with 1GB of RAM, Android Oreo (specifically lightweight custom ROMs) breathes new life into the hardware, making it usable in the modern era, provided you are willing to accept a few compromises. Because Samsung ceased official support for the J2