Download the correct for your device.
If your Lineage OS 19.1 device is older (32-bit ARM), BitGApps offers excellent stability. gapps for lineage os 191 link
For LineageOS 19.1 users, is the official, recommended, and most reliable GApps package. The verified download links are: Download the correct for your device
: Navigate to Advanced -> Reboot to Recovery . Do not boot into the system yet. is the official