Un-linking Apple Calendar entries to G-mail accounts

If you have not entered it 3-4 times it won't appear multiple times. However please check...

Where is the calendar events stored on your iPhone? Please add the email account, that's it.

See the iPhone and Mac Calendar Pics below

When you add events to the Calendar it gets added to the Default Calendar set on your device.

See the pic below

Please open Calendars App and tap on Calendars at the bottom middle tab

Uncheck what you do not want to see.

Help me please