Simplify the account before you scale it
Fragmented accounts are the most common reason spend stops working. Dozens of ad sets, overlapping audiences and tiny budgets prevent any single ad set from exiting the learning phase, so the algorithm never gets the density of signal it needs. Consolidation fixes this faster than new creative. Collapse into a small number of well funded campaigns, let broad targeting do the work it is genuinely good at, and use creative as the real targeting mechanism — the message decides who responds. Fewer, larger ad sets stabilise cost per result and make test outcomes readable, because the difference you observe is caused by the variable you changed rather than by budget starvation. When founders ask why their costs jump around week to week, the answer is usually that no part of the account has enough volume to be statistically meaningful.