Agreed!!
You used to be able to do something similar before HubSpot crippled their form analytics - Here a couple of posts about the same issue for you to upvote -
https://community.hubspot.com/t5/HubSpot-Ideas/Filter-Form-Analytics/idi-p/783748
https://community.hubspot.com/t5/HubSpot-Ideas/Please-bring-detailed-form-reports-back/idi-p/784497
I’ve been messaging support about this off-and-on for months with no progress - they seemed determined to make it difficult to get useful information out of forms