Suppose you poll ten marketers on their understanding of the marketing funnel. In that case, you will likely receive as many varied responses as there are marketers. Why? So, what is a marketing funnel? Your marketing funnel should be designed specifically for how your target audience makes purchases rather than being a generic one.
https://nflowtech.com/insights/how-to-optimize-your-marketing-funnel-for-the-customer-journey/