Fiverr is fine as a lead generator, in some cases.

And far better to us a standard model of creating an Authority Blog or Podcast around your topic.

You'll work far less via Blog/Podcast + have far higher income, than trying to use Fiverr as a revenue generator.

You're welcome to book a call with me + I can walk through my experiences with different monetization approaches... as each niche + your expertise level + what you're offering (product, service, info) has to be considered.

Also your entire funnel, including continuity system.

Also your personality style (introvert/extrovert).

Also your Lifestyle requirements - hours/week work, monthly profit, health, happiness.

Many factors come into play designing your money flow.

I've been freelancing + running various businesses since 1974 + having a match on the above factors will have a far higher likelihood of success, than having many mismatches.

Fiverr is not for passive income. Affiliate marketing and informational products which are sold online fall into passive income.

Also, big email lists through which you can earn passive income.

If you are looking for passive income then do some study about affiliate marketing or talk to some consultant for an hour to understanding setting up websites, joining networks, adding products, SEO, SEM, SMM and PPC.

Yes, On my initial days, I used to be Freelancer programmer. i have earned enough money to pay my internet bills and other expenses on my own. starting is tough, but once you get projects its always helpful. :)