It's definitely a two-way street. The more you interact with others the more they interact with you. If all you do is post and run results would be spotty at best. I recommend upvoting other peoples content and responding to comments people make on your posts in a timely manner, not weeks after they commented.

Here's a site I found very helpful to understand the dynamics on this platform

https://www.steemithelp.net/#/etiquette/