A: Only if you use a community-driven server redirector (like GDPS). Official servers require the latest build.
A: For PC, search the "Geometry Dash Archives" project on GitHub. For Android, look for "GD 2.2 v22074a APK" on archive.org. geometry dash v22074a better
Without more information about the specific changes in v22074a, it's difficult to say what makes this version "better." However, some possible improvements or additions could include: A: Only if you use a community-driven server