LineageOS is cool and can prolong the device usability but some apps may not work (Google Pay, banking apps) if they detect an unofficial system (via SafetyNet)

LineageOS is cool and can prolong the device usability but some apps may not work (Google Pay, banking apps) if they detect an unofficial system (via SafetyNet). And you likely won't get future vendor blob upgrades (from Qualcomm), not improving the security risk problem.