Start by mapping the funnel, not blaming the leads
It's tempting to conclude 'the leads are bad' the moment a batch doesn't convert, but that conclusion skips several steps that could each independently explain the result. Before changing lead sources, break the funnel into stages: lead received, contact made, appointment booked, appointment completed, job closed.
Tracking conversion at each stage, even informally, usually points to one obvious weak link rather than a uniformly bad set of leads.
