A common mistake new Pipedrive users make is when they over-complicate their pipelines by having more funnels than there needs to be. I've had clients set up pipelines for different types of deals, products or geographic areas. The issue with this is that it's generally messier, it's harder to see all deals currently in progress and it complicates reporting.
You can simplify your pipelines by standardising the stages and instead, use filters to segment your deals based on things like deal type or product from your custom fields.
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