Suburbia Theme?? Or something similar?

I just switched from WordPress.com to www.ads-software.com. I used the Suburbia theme on WordPress.com, but the theme didn’t migrate with my site and it doesn’t appear to be available here (or even on WordPress.com if I were starting over). Yet I found the theme on wpshower.com to download, which I did. https://wpshower.com/themes/suburbia/ However, I don’t know how to get it working on wordpress, or if I even can. Can someone tell me how to do that?

I’m searching for other themes, possibly one I like even better, but so far I’m not finding any. I want a theme that has a static image in the header and magazine/grid style posts with photos with each post heading. I have found a few themes that seem to have the option for columns. Would this give me the same result as the grid style I’m looking for and if so, how do I create the columns? I can’t figure that out.

Thanks for your help!