When starting out, testing three to five creatives in each ad group is a good idea. This gives you enough variety to compare results without spending too much too fast. If you test only one creative, you might miss better-performing angles. But testing too many at once can make it hard to manage your budget and results. Each creative should have something slightly different—maybe a new headline, image, or CTA. Once you run them for a while, check which one gets the best engagement and conversions. You can then pause the low performers and create new versions based on the top one. This method helps you improve over time without wasting clicks. Some campaigns may need more testing, but three to five is a good starting point. Have you tried different numbers before?