When installing LineageOS 19.1 (based on Android 12L), you need a compatible Google Apps (GApps) package to access the Play Store and other Google services. Because LineageOS is built from the Android Open Source Project (AOSP), it does not include these proprietary apps by default. Primary GApps Recommendation: MindTheGapps
Open GApps struggled to provide stable builds for Android 12 for a long time, leading to bootloops. The Solution: gapps for lineage os 191 link
Installing GApps requires an unlocked bootloader and a custom recovery environment. LineageOS 19.1 usually ships with its own recovery, but you can also use TWRP if supported for your specific device. When installing LineageOS 19
Step 2: Wipe (If Fresh Installing)
If you rely on the Play Store, Google Maps, Gmail, YouTube, or any banking apps that require SafetyNet, then yes – GApps are essential. While Lineage OS 19.1 is fast and private without them, adding the correct GApps package transforms it into a fully functional daily driver. The Solution: How to Install GApps on LineageOS 19