LineageOS 18.1 (Android 11) – stable, all hardware works except FM Radio. For tinkerers: crDroid or Pixel Experience.
Often considered the most stable "debloated" choice. Unofficial builds for Android 12.1 and 13 are common. DelightOS: samsung galaxy j4 plus custom rom hot
The Snapdragon 425 is a low-end chipset. Custom ROMs must be optimized (often "lite" or "Go" editions) to run smoothly. Heavy skins (like OneUI ports) often cause lag, making AOSP (Android Open Source Project) based ROMs the preferred choice for performance. LineageOS 18