Depends on what the app needs, but microG seems to help a lot. But the issue with the GSF is that you can't just use it when needed, it's either nothing or ever

Depends on what the app needs, but microG seems to help a lot. But the issue with the GSF is that you can't just use it when needed, it's either nothing or everything. Additionally, modifying the firmware to install microG can lead to Safety Net failing, which may also lead to some other apps failing. I use Android without GSF & microG and it's fine for my needs, but that really depends on what types of apps you use.