For a new Amazon FBA seller, launching one product first is usually better than launching a small bundle right away. One product keeps your learning, inventory, PPC, and listing optimization much simpler, so you can see what is actually working before you add more moving parts.
A bundle can be smart after you understand the niche, because it helps you increase average order value and stand out from direct competitors. But bundles also need more planning, more inventory coordination, and usually a stronger brand setup, so they are less beginner-friendly.
If you are new, start with one product that solves one clear problem and make that listing as strong as possible first. Once it gets sales, reviews, and stable conversion, you can add a related bundle to increase profit and protect yourself from price competition.
So the simple rule is: one product to learn, one bundle to scale. If your niche is already proven and you have the budget, a small bundle can work, but only when the items are naturally related and make the offer more useful than buying them separately.