Sir, this is a Wendy's...
Wait, no. Uh, StreetComplete is an editor for OpenStreetMap. These are used to update the OSM (OpenStreetMap) data.
There are other editors too like:
- JOSM https://josm.openstreetmap.de/
- iD https://www.openstreetmap.org/ (the edit button)
- Rapid https://rapideditor.org/
If you want navigation (directions to go somewhere), those are different apps:
- OsmAnd https://osmand.net/ (you are here)
- Organic Maps https://organicmaps.app/
The OSM StreetComplete is a mobile editor designed to make it easy to make updates to OSM. Therefore, easy means the edits are much more constrained, especially to your local area. If you want full editing power, you need a powerful editor like JOSM.
If you want directions, then you need OsmAnd or Organic Maps.