Curation rewards? 🤔

Hello fellow Steemians!

I was curious about curation rewards and how they work, I do up-vote, comment and occasionally re-steem, however my curation rewards have never been more than $0.03. Ho do some people make exponentially more (especially the bots)? Does it have something to do with my vote weight?

Here is a screen shot of my curation rewards

Here is a screen shot from a random user:

I like using Steemit and commenting articles, downvoting spam, resteeming interesting articles, it would be nice to make a little more on the curation reward though! 😁
Any ideas?

Helpful posts!