Your bid strategy is basically the campaign’s driving instructor.
“Maximize Conversions” teaches it to collect as much data as possible, fast, even if it’s messy. “Target CPA” or “Target ROAS” makes it drive more carefully, but slower.
If you start with tCPA too early, Google doesn’t know what a “good conversion” looks like yet, so it struggles to optimize.
I usually recommend starting with Maximize Conversions, then switching to tCPA once you’ve got around 50–60 conversions in your dataset.
It’s like moving from autopilot to assisted driving you’re letting the system drive, but now it actually knows where the road is.