Google is testing a magnifying glass in the mobile search at footer overlay on the bottom right. You can see this when you can scroll down in mobile search. You can use this to refine your search.
This was spotted by Vlad Rapp0port & shared over Twitter:
Here is the Tweet Mentioned:
— Vlad Rappoport (@vladrpt) June 6, 2021
Google also tested to remove magnifying glass from desktop search recently.