To find all of your objects and how they are connected, you can look to the Graph for your main source of truth.
Read more about the graph.md here.
Additionally, to see all of the objects you've created in your space, you can use the anytype-library system widget that can be found at the top of your sidebar (just below your space name).
As a last resort, if you still can't find what you're looking for, try and search for it.
To navigate to the search, head to your navigation bar, and click on the magnifier.
If you've previously removed some objects from your space, they will appear in your finding-your-objects.md unless you've already permanently deleted them.