LineageOS 19.1 is based on (Android 12.1). Because it does not include any Google services by default, you must flash a GApps package separately if you want the Play Store, Gmail, Maps, or other Google dependencies.
Have a specific issue not covered here? Check the XDA Developers forum for your specific device or the official Lineage OS subreddit. Happy flashing! Gapps For Lineage Os 19.1
Known for being lightweight and efficient, often used by those who want the bare minimum to run the Play Store. LineageOS 19