No lead-conversion tracking — nothing counts an enquiry
GA4 fires only page_view, session_start, scroll, user_engagement and click. There is no form_submit, generate_lead or contact event — nothing that records an enquiry or sign-up. So even the visitors arriving now aren't measured beyond a pageview, and every future report would read zero leads no matter what actually happens. For a site whose job is to generate enquiries, this is the first thing to fix — before traffic scales, so the growth is captured from the start.