I got this notification on my phone & when I clicked on it, it says there are no app recommendations at this moment. What is this & why do I get the the notification if there is nothing to show ? My phone is Galaxy A36 5G

The only thing that is improved after the pie update is the time taken to take a screen shot...

After getting the Android Pie update for my Galaxy A6+, I feel like phone is slower than it was before.. does anyone else had the same experience ?? What did you do to speed up the phone ??