A unique category for a device with 2GB of RAM is the "Android Go" port. Some developers create custom ROMs that mimic the lightweight nature of Android Go, designed specifically for entry-level hardware. This is arguably the "smartest" choice for the Y5 (2019). It sacrifices some high-end features (like advanced split-screen multitasking that would crash the device anyway) in favor of stability and speed. These ROMs can breathe new life into the device, making it a competent backup phone or a media player.
If you have the with Kirin, stop here — you cannot install any custom ROM. custom rom for huawei y5 2019 top
A: This is a "Bootloop".