What should I do if my Ford Focus won't start?

My Ford Focus suddenly won't start. I've tried to jump start it, but it's not working. What could be the issue and what steps should I take to fix it?

First, make sure your battery is properly connected and not corroded. If that's not the issue, it could be a problem with your starter or alternator. I suggest taking it to a mechanic for a diagnostic.

Check your spark plugs and ignition coils. They could be worn out and causing issues with starting. If they look damaged, get them replaced.

Sometimes the issue can be with the fuel pump. Check to see if you're getting proper fuel flow. If not, you may need to replace the fuel pump.