Can't convert from HFS+ to APFS

Recently upgraded to macOS 10.14.1, and my drive remained HFS+. I have made sure to add all drivers needed for APFS in my Clover EFI. Now I'm trying to convert to APFS because I want to update to 10.14.4.

I've tried booting to recovery mode and using Disk Utility to convert, but the option "Convert to APFS" is grayed out. Tried First Aid but didn't change anything. That's all I've tried.

Was hoping there would be some workaround or Terminal command to do this...

I'm using an HDD, speaking of which, is it suitable for APFS? I've seen some users trying to go back to HFS+ or even skipping drive conversion. Is there any reason I should remain in HFS+?

submitted by /u/thetrexyl
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