Im doing 3 Google Ad campaigns for local tree service, which has been running for two months now and i figured to reduce spending leakage each one should have 2-3 ad groups with very specific intent. I don't want overlap/overspending due to misdirected clicks, so i have a group of keywords per ad, and then for another ad I'll have those positive key words be negative for another. Ie
Campaign 1
Ad 1 keywords
A, B, C
Ad 2 Keywords
X, Y, Z
Ad 1 negative keywords
X Y Z
Ad 2 negative keywords
A, B, C
And then ill do the same for other campaigns, ie funnel with specific intent and apply negative keywords so there's no signal mixture. However, Google says that using negative keywords that are positive in other ads or campaigns are preventing my ads from being seen. How true or severe is this? Is there a way to funnel high intent across 3 campaigns with multiple ad groups without negative keywords getting in the way?