What are the possible issues when the Kia K3 clutch cannot be pressed down?

[LeHope]

There may be several reasons: The clutch is not fully engaged. Solution: Inspect and repair the clutch. The handbrake is not fully released. Solution: Release the handbrake. The gear is stuck and not fully engaged. Solution: Re-engage the gear. The clutch friction plate is completely worn out. Solution: Replace the clutch plate promptly. Here is additional information: The clutch assembly should only be considered for replacement if the following conditions occur: 1. Difficulty in shifting gears due to incomplete disengagement. 2. Slipping, where the engine RPM is high but the vehicle accelerates slowly. 3. Severe abnormal noises from the clutch, which necessitate replacement.