testing meta ad campaign

Many people say: Keep testing your ads bla bla bla... But how to test it affectively? This is our suggestion, check it out: Pros: test more audiences per creative (1-5-1 / 1-3-1). Beginners: test more creatives per audience (1-1-3 / 1-1-5). Golden rule: 2–3 angles × 3–4 creatives each = 6+...