@Moe0 hello!
1) Make sure your listing is listed and not snoozed. You can see that if you go to "Calendar and more" and look at the bottom left of the page.
2) Make sure that you search with dates that your listing is available and not booked.
3) Search on the map to find your listing and not on the list of your city. It may not appear on the list because many other listings are newer or are boosted at the moment. That always depends on the dates you have selected. For some dates, your listing could be on the list, while for some others, not.
4) Try to search with filters that you know you provide in your listing and see what happens (f.e.TV, elevator, washing machine, kids friendly etc.)
If any of these doesn't work, you can contact Airbnb by the ways that are described in this thread: