Get the number first. Upload data only when you need the cause.

Check how much customer value covers the cost of acquiring that customer.

Set the minimum ROAS from the margin left after product and variable costs.

Reserve the profit you need, then set the acquisition cost you can afford.

Fix sample and duration before reading results to reduce early-stopping errors.

Divide budget by CPI to set a base install plan and a conservative-to-optimistic range.

Reconcile the same performance whether your team reports it as CPA or ROAS.

Check whether a campaign target is arithmetically reachable before launching it.

See whether you will underspend or overspend, and what the remaining days can carry.