Suddend drop to 0 on Google Discover. What could be the cause?

Hi,

Thanks for having me on the forum, I'm looking forward to many productive discussions.

This is a blog with thousands of posts, and multiple editors. I'm not sure what happened after August, but I am curious as to what you think.

It's focused around SMEs and business growth. The chart below is from Google Discover. For some reason, the impressions just drop to 0 in August and they don't go back up from there... There hasn't been any change to the website (apart from new blogs being added) during the period between when it had 1M per day, and 0 impressions.