Hello, I manage a website that gets around 1000 daily unique visitors but today suddenly has 12000 visit and after see the StatCounter it turns to be Google-Bot Images. is this normal ? it's the first time i see this huge visit amount in one day from Google bot
There are some Google Image features change in some county, you should have a look at this. https://www.seroundtable.com/google-images-germany-frames-19601.html
Its better to use Google Analytics for your website then you can filter those unwanted traffic visitors to your site.
Check that your site does not have a virus. I had something very similar last year, and it was Google checking all the pages as it had detected a virus but didn't let me know for around 2 weeks.