How to troubleshoot a faulty clutch in a Vauxhall Astra?

My Vauxhall Astra's clutch seems to be slipping and it's becoming difficult to switch gears smoothly. What could be the possible causes and how can I fix this issue?

Firstly, check the clutch fluid level and top it up if necessary. If that doesn't solve the issue, the clutch might be worn out and will require replacement.

Another possible cause could be a faulty clutch release bearing. This can be diagnosed by a mechanic and replaced if needed.

It's also important to check for any leaks in the clutch hydraulics and repair them if found.