Possibly, but it's not guaranteed. Many banking apps check for SafetyNet or Play Integrity, which can fail on a custom ROM. Solutions like Magisk with specific modules can sometimes hide the modifications, but it's never a 100% guarantee.
Tap in TWRP, select the custom ROM file, and swipe to confirm flashing. galaxy a8 2018 custom rom
Back up all your data (photos, contacts, apps) before starting, as this process requires a factory reset. Possibly, but it's not guaranteed
Depending on your preference for features or speed, the community offers several distinct ROM paths: 1. LineageOS (Best for Longevity and Speed) select the custom ROM file