Why doesn't the reverse work on a festiva 5 speed manual transmission?

In a Festiva 5-speed manual transmission, the reverse gear is designed differently than forward gears. Typically, reverse uses a separate gearset that engages in a different manner, often requiring a shift lever to be pulled or pushed in a specific way to prevent accidental engagement. If the reverse gear is not functioning, it could be due to worn linkage, damaged gears, or issues within the transmission itself, preventing it from engaging properly. Additionally, some manual transmissions incorporate a lockout mechanism to avoid shifting into reverse at inappropriate speeds.