Airbnb did it at the beginning and crossposted on a bigger community Craigslist. You can also start to crosspost your articles. I think it is a very effective method!
Check out my article on Indiehackers: https://www.indiehackers.com/@toomaime/madewithoutcode-how-to-build-a-startup-without-code-37ed976845
First I published it on my personal Medium Account and then crossposted it on Indiehackers.