I was running into the same issue. I guess it is using some Google API and fails to find it. So the issue might be related to microG:
24636:08-05 16:22:22.873 3462 3502 D InstallSessionTracker: onCreated: Install session created for appPackageName=com.governikus.ausweisapp2, sessionId=863314182, appIcon=null, appLabel=null
24640:08-05 16:22:23.149 2293 2746 E PackageInstallerSession: foundation.e.apps drops manifest attribute android:installLocation in base.apk for com.governikus.ausweisapp2
24642:08-05 16:22:23.151 2293 2746 D PackageInstallerSession: Marking session 863314182 as failed: INSTALL_FAILED_NO_MATCHING_ABIS: Failed to extract native libraries, res=-113
24643:08-05 16:22:23.151 2293 2746 I PackageInstallerSession: Session [863314182] was destroyed because of [Session marked as failed: INSTALL_FAILED_NO_MATCHING_ABIS: Failed to extract native libraries, res=-113]
24644:08-05 16:22:23.156 2293 2746 E PackageInstallerSession: Failed to verify session 863314182
24647:08-05 16:22:23.159 5431 5431 E undation.e.apps: App install is failed for: com.governikus.ausweisapp2 status: 7 extra: INSTALL_FAILED_NO_MATCHING_ABIS: INSTALL_FAILED_NO_MATCHING_ABIS: Failed to extract native libraries, res=-113
24648:08-05 16:22:23.161 2293 2746 E AtomicFile: Failed to rename /data/system/install_sessions.xml.new to /data/system/install_sessions.xml
24649:08-05 16:22:23.162 3462 3502 D InstallSessionTracker: onFinished: active install session finished for appPackageName=com.governikus.ausweisapp2, sessionId=863314182, success=false
24651:08-05 16:22:23.193 5431 5477 I WM-WorkerWrapper: Worker result SUCCESS for Work [ id=eedeb249-bbb0-4f81-a402-3b64a34656d9, tags={ foundation.e.apps.install.workmanager.InstallAppWorker,5c6f14e54ecab412cb828876 } ]
24661:08-05 16:22:23.213 2293 3030 D BackgroundInstallControlService: Package event received: 0
Looks like it worked in the past:
but for sure an API missing in microG.