Optimizing Contact Generation from Company Lists: Tips and Tricks

Hello! I'm a little confused on the number of contacts I'm able to generate. Let's say I had 200 companies in my company list. I set a limit to only take 3 contacts from each company but I can only generate around 130 contacts and the thing is I have 3-6 contacts for some companies and zero for many. What's the best approach to getting it to work correctly? I've watched the Academy video in lesson 101 but it doesn't cover this use case.