the wasted spend number went down and i didnt do anything

Fair question, and the answer is that it is a rolling window rather than a running total. The wasted spend figure covers the last 30 days by default. Every day, one day drops off the back and a new one joins the front. So the number moves on its own constantly, and a fall can mean either that things improved or simply that an expensive day has aged out of the window. That is the right behaviour for the question it answers - "what's being wasted right now" - and it is the wrong number to track as a score, because you can't tell improvement from the calendar. If you want to see whether your work is paying off, change the range to a fixed period and compare like for like: this January against last January, rather than today's rolling 30 against last month's rolling 30. Also worth knowing: a keyword drops off this list the moment it stops meeting the criteria, including because its spend fell out of the window. It hasn't necessarily been fixed.