That’s a long standing known issue as per this thread:
https://answers.netlify.com/t/over-100x-more-views-in-netlify-analytics-than-google-analytics/15403
You can add your own feature-request’s to the Features section.
Just make sure to do a quick search first to see if it’s a duplicate request, if there’s an existing one you can ‘like’ it and comment on it to effectively +1 it.