In my first tests with Italy, I often lost money due to inappropriate creatives and unsuitable devices: the banner looked great, but users on older Android devices simply ignored it, and the budget was wasted. I liked the details of this case study: how we excluded older operating systems, leaving only Chrome, and how automatic rules removed "killer" subscripts and ineffective publishers. As a result, more than half of the original creatives were no longer needed, but the ROI steadily increased. If you're interested in how to build a push campaign in Italy with real numbers and working tools, you should check out the case study itself
https://richads.com/cases/gambling-italy/ – it really gives a clear idea of how the "not more traffic, but better traffic" approach works.