How to troubleshoot starting issue in Vauxhall Movano?

My Vauxhall Movano is not starting properly and I'm not sure why. Sometimes it starts fine, other times it won't start at all. What could be causing this issue and how can I troubleshoot it?

One potential cause could be a faulty starter motor. You may want to have it checked and replaced if necessary.

Another possibility could be a weak or dead battery. Try jump starting the vehicle or having the battery tested and replaced if needed.

It could also be an issue with the ignition switch or starter relay. Have a mechanic take a look and make any necessary repairs.