Can't add new contacts to MacBook Pro

Like many others, I can't add contacts to MacBook Pro. Eventually, I went into my Goggle account and added them there and they populate Contacts on MacBook and iPhone instantly. Oddly, I can't find Contacts in the App Store in order to update the app. I also had problems with the email app and reverted to Yahoo after to doing everything Apple suggested to fix Mail issues. Apple really abandons their basic apps so customers are left to their own work arounds.