View-through conversions not configured in GA4
The most common failure in UK YouTube Ads accounts is measurement. The campaigns are running, views are accumulating, but there is no GA4 view-through conversion tracking in place. Without it, conversions that were influenced by a YouTube ad — users who watched a video and then converted hours or days later through a different channel — are attributed entirely to that last click. YouTube's contribution to the purchase journey is invisible. Budget decisions are made without understanding the full commercial value of the channel, and YouTube is often cut first when pressure on the overall paid budget increases.