Is it possible to uninstall the Google Play Store without affecting Google Play Services?
Some apps are dependent on google play store links... 

They have to be installed separately (or the link must be broken)

My method: install from alt APK source (like aptoide)
you can patch the apps with a good app manager to "break play store link" (thats the command option in said app manager)

However... Some apps yet require license validation.
This requires a patch. "Lucky patcher" is good at this... 

And since im sure some disclaimer is needed... Lucky patcher can be used to pirate apps, but serves many functions, and if you own a license to said app... you are not "breaking any rules"