Ask HN: How do you make a site for a new service look “established”?

I'm making a website for legal resources for people being evicted due to COVID-19.

Right now, the Wordpress theme is okay but it looks sparse -- like anyone could have spun it up in a weekend. (Which is actually what happened, but that's okay because it's backed by real pro-bono lawyers.)

Are there any resources that show how to "beef" it up, or indicate what kind of content makes it look more trustworthy?