I am not getting any email from my Gmail account

Delete the account then add it back with the correct password.

Perferably use the Gmail app

Thats what I suggested, use Gmail app.

You are not addressing Apple here so “come on Apple” is a waste of words..

Google are the bad guys for coming up with their own fake IMAP system.

You can delete and redo the gmail account all you want it ends up failing again. There is some serious interface problem to the point I am looking at using other mail services without using Apple Mail.

Come on Apple I bought a new Macbook Air..things are not liek they use to be when it comes to quality of service.