Print up some signs and post them in the various areas so people driving or walking by can learn about your lost pet. Have smaller versions of your sigh to hand to people as you talk to them. Be sure your signs can be easily read by people in cars -- simple "lost dog (or cat)", a full-body photo, and in the biggest font, your phone number.
Post on Facebook
Post in the various Facebook groups that your pet has gone missing and provide a good, full body picture. Be careful taking advice from people on social media. They mean well but are not trained, and we find much of the advice given is actually dangerous. And be sure to check the pages for posts about found pets.
Post on Nextdoor
Post in the various Nextdoor groups that your pet has gone missing and provide a good, full body picture of your pet. And be sure to check the site for posts about found pets.
Neighbors app by Ring
The neighbors app does not require you to have a ring camera. You can post your info there as it provides an added network to get the word out about your lost pet. And be sure to check the site for posts about found pets.