Many businesses assume that lowering their Cost Per Lead (CPL) requires slicing their ad spend. In reality, cutting budgets often triggers the exact opposite response, forcing ad network algorithms to lose optimization efficiencies.
The best filter for bad leads is your ad creative. If you write generic copy, you will get generic, low-intent clicks. Speak directly to your customer's specific pain points to self-select the right buyers.
Making a form "too easy" to fill out is a common trap. By adding a single smart qualification question (e.g. "What is your budget?") you increase lead quality and cut down on waste, directly lowering your true cost per acquisition.
Audit your targeting. Shift budgets away from broad interests and focus heavily on high-intent search terms, lookalikes based on existing customers, and deep retargeting segments.