The J2 Core’s 1GB RAM struggles with Samsung’s background services. Rooting lets you install apps like Greenify or L Speed to reduce RAM usage. TWRP is the easiest pathway to flash Magisk (systemless root).
Installing TWRP on the Samsung Galaxy J2 Core is a high-risk procedure with a steep learning curve due to the lack of official support and Samsung's aggressive Verified Boot security. twrp samsung j2 core