Seems that most of your traffic is coming from lower paying locations which is limiting how much you can earn. I'd also keep in mind that we're in the worst month of the year with respect to global ad rates, so you're likely to see lower earnings during this time.
With regards to improvements, looks like you have some revenue issues that you can fix with a couple of clicks here: https://pubdash.ezoic.com/ezoicads/recommendations
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