Help me build an email list

I have created a customer profile (company level & person level) for my B2B SaaS. Now i want to find the exact customer profile. How can I find these people on LinkedIn or any other tool? The Customer Profile has multiple traits like: At company level: Company Size Industry Type Characteristics Problems Faced At person level: Persona Traits Pain Points Goals Decision Triggers etc. So how I can make sure i get these exact or most of these traits in the person or company? Or (as I dread) is it supposed to be manual?! Please give your best suggestion. Thank you :)