Thanks dude, I GOT IT..all emulators support v7, real phones or 64bit emualtor instances using arm64.
learning ? try to read in the section tutorial here in this forum to understand the basics.
I thought deleting the armv8 folder would crash, maybe I'll give it a try after you talk like this.To be precise if a game provide v7 lib, just modify v7 and delete v8. It will work on any device/emu