Installing /e/OS on a Samgsung Galaxy S5 (international) that previously had lineage OS 17

[aibd]

Really flashing any /e/ ROM it should go on the appropriate manufacturers stock ROM, as mentioned Week 52 : Development and Testing Updates

@Manoj

Installation Tip for /e/R

Devices with Stock 11 ROM should flash the stock ROM first before flashing /e/ R .
Pl note this will wipe out your existing data. Take backups if required.
Manual upgrade is required as the default Updater application does not upgrade the OS and on detecting a different OS tends to block the installation. Read the next section for details