I've been cold-shilling alerty to journalists at 9to5mac, macrumors, appleinsider, etc to no avail. 

Any pro tips around cold outreach and getting published?

𝓵𝓲𝓿𝓲𝓷𝓰 𝓽𝓱𝓮 𝓮𝓷𝓭𝓵𝓮𝓼𝓼 𝓼𝓾𝓶𝓶𝓮𝓻 • building @buoy 🛟 • @dawnpatrol • pfista.com

Find something a journalist personally cares/writes about on their own pages that connects to what you're building. Or find those people first and then figure out what connections they have. 

If they reply back no, pitch them a related idea that's bigger than just you & gets coverage for a friend too. win x win x win