Too much spam emails bypassing google filter

since last 2 weeks too much spam is landing in my gmail inbox, anyone else experiencing this ? it doesn't go to spam folder it will go to either promotion or updates tab. And google is actually marking it as Important

Spam is all kind of emails lab tests, cars, insurance, random news articles from India today. They are all from different domains so I cannot block/filter them.

I have just checked all of them contains just 1 image of advertisement and Unsubscribe link. This makes it more difficult to filter them.

Someone has discovered a major loophole to fool google.