Personal addition: You would be surprised, how many details in your area are still missing! And if you want to "increase gamification" or even make it more challenging, you try to catch features while on your commute or lunch break! Or by going out with a group - doing it in "team mode.
I love Street Complete! It gets me out of the house and walking, and it's fun to do it when traveling, especially when there is a bunch of missing data you can fill in.
OpenStreetMap community
Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org/.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community/
https://mapcomplete.org/ is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.