If you are looking for a very specific thing and you can't find it near your location, you can use the search filters at the top of Wallapop's main wall.
With the filters you can search all Wallapop or choose a specific category at the top of the wall.
To set the city you want to search, select the Location option, set the new search point and click "Save this location". Once this is done, you can determine the search distance from the chosen point.
You can sort the results by distance, date of the ads, price, from the "Sort by" section. You can also filter by extra conditions, price, or publication date.
Remember that you can now save the search from the heart button placed next to the search bar. To consult them you must access the Favorites section in the navigation bar.