If your Facebook and Instagram advertising became significantly less effective sometime in 2021 and never recovered, you're not imagining things. Something fundamental changed, and the strategies that used to work simply don't anymore.
What actually happened
In April 2021, Apple released iOS 14.5, which required apps to ask users for permission to track them across other apps and websites. Most people said no. Overnight, Facebook lost the ability to see what millions of users were doing after they clicked an ad.
This matters because Facebook's entire advertising system was built on tracking. When you bought shoes after seeing an ad, Facebook knew. It used that information to find other people likely to buy shoes. Without that feedback loop, the system got worse at finding good customers and couldn't accurately report what was working.
The effects were dramatic. Customer acquisition costs increased by 30-50% for many businesses. Reported results became unreliable — campaigns that appeared to be working weren't, and vice versa. The sophisticated targeting that made Facebook advertising so effective became much less precise.
What doesn't work anymore
Relying on Facebook's reported numbers. The data Facebook shows you is increasingly disconnected from reality. We've seen campaigns that Facebook reported as highly successful produce almost no actual sales, and campaigns it flagged as failing that were actually profitable.
Narrow audience targeting. The detailed targeting options still exist, but they're less accurate than they used to be. Campaigns targeting very specific audiences often underperform because Facebook can't find enough of those people anymore.
Set-it-and-forget-it campaigns. The automated optimisation that used to work well now needs much more supervision. The algorithm makes more mistakes without good tracking data.
What's working now
Broader audiences with better creative. Instead of relying on Facebook to find exactly the right people, successful brands are using broader targeting and letting the creative do the filtering. If your ad speaks specifically to your ideal customer, the wrong people will ignore it anyway.
First-party data. Your own customer data has become incredibly valuable. Email lists, purchase history, website visitor data — this information isn't affected by Apple's changes. Brands that invested in collecting customer data are now at a significant advantage.
Better attribution. Stop trusting Facebook's numbers and build your own understanding of what's working. Compare reported results to actual bank deposits. Use discount codes to track where customers came from. Survey new customers about how they found you.
Diversification. The brands handling this best aren't just optimising Facebook — they're building other channels. Search visibility, email marketing, referral programmes. When any single channel gets more expensive or less effective, they're not stuck.
Practical next steps
Audit your actual results. Take your Facebook-reported sales and compare them to what actually happened in your business. How big is the gap? This tells you how much to trust the platform's data.
Test broader audiences. If you're using narrow targeting, try expanding it and improving your creative instead. Often this produces better results at lower costs.
Build your email list aggressively. Every website visitor you capture is a potential customer you can reach for free, regardless of what Facebook does next.
Create tracking you control. Implement systems that let you understand where customers really come from, independent of platform reporting.
The era of easy, cheap Facebook advertising is over. The brands that adapt will thrive. The ones waiting for things to go back to normal will keep struggling.
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