The debate about Performance Max versus Standard Shopping campaigns has produced more heat than light. The honest answer depends on the account, the catalogue and the measurement setup. A structured framework for making the right call for your specific situation.
Most Performance Max underperformance is a feed problem. The campaign structure and bidding get the attention, but it is the product data quality, title logic and custom labels that determine what gets served, to whom and at what margin.
Broad match has a reputation it mostly earned in 2018. The match type has changed significantly, and dismissing it entirely is leaving incremental volume on the table. Here is how to give it a fair trial without blowing your budget on irrelevant queries.