Written for LineageOS 18.1 on Samsung Galaxy S4, with Magisk 0.25 installed.

• Enable Zygisk in Magisk (reboot)
• Install LSPosed as Magisk Module (reboot)
• Install FakeGApps apk from https://github.com/whew-inc/FakeGApps -> should be picked up by LSPosed (if necessary go to app settings and move to internal storage to be picked up correctly by LSPosed)
• Install MicroG Installer Revived from https://github.com/nift4/microg_installer_revived/releases/tag/v3.2.0-0 (reboot)

You should now have microG as runnable application, go there and see if all self-check options are enabled.