https://opaleye98023.wixsite.com/iphonecontactbackup/post/how-to-export-iphone-contacts-to-gmail-backup-contacts-to-gmail

https://apps.apple.com/us/app/my-cont...

Short Link : https://apple.co/3ouyix3
This video answers some of the other queries like
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transfer iPhone contacts to gmail without iCloud
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In this video today we will see how to export iPhone contacts to gmail without using iCloud

Open the link given above.
Install the app
Select Back up format and press continue
Make sure the contacts permission is on.
Press share to take a backup of the contacts to device or to export it to gmail
Open the link given in tip(at the end of video)
Import the backup
This will import all the contacts to gmail.