How many ads should I run at once on Facebook and Instagram?

Meta spends an ad set's budget across the ads inside it, leaning toward whichever ones are getting results. That makes the ad set the unit of learning and the creative the unit of testing. If you have a modest budget and create six ad sets with one ad each, every ad set learns slowly and you cannot tell whether an ad worked or simply got lucky. One ad set with several ads gives the system enough room to compare.

'Different' means different ideas, not different colours. A useful set for a home-cooked food business in Bahria Town might be: a Reel of the kitchen at work, a carousel of the weekly menu with prices, a customer's WhatsApp message (with permission) as a static image, and a simple video of the owner explaining delivery areas. Four angles, four hooks. Three versions of the same photo with a different font is one idea, not three.

Expect most of the spend to go to one or two ads. That is normal. Do not force even spending; instead, every couple of weeks, pause the clear losers and add one or two new ideas so the set does not go stale. Keep a simple log of what each creative tried, so you build up knowledge about what your customers respond to.

When should you split into more ad sets? When you sell clearly different things to different people, such as bridal wear and school uniforms, or when you are retargeting people who already messaged you and need different ads for them. Even then, keep the number small enough that each one can gather a meaningful number of results every week.