How to troubleshoot a Vauxhall Movano's engine not starting?

My Vauxhall Movano's engine won't start at all, I've tried jump starting it but it's still not responding. Any idea what could be causing this issue?

First, check the battery connections and make sure they are clean and tight. If they look good, it could be a problem with the starter or ignition system. I suggest taking it to a mechanic for further diagnosis.

It could be a fuel system issue, such as a clogged fuel filter or a faulty fuel pump. Have a professional inspect the fuel system and replace any necessary components.

Have you checked the fuses? It could be a blown fuse that is causing the issue. Also, make sure your key is properly programmed and try using a spare key if available.