Right.
You are going to have to improve your descriptions before anyone can correctly diagnose your fault.
A common issue with TD5 is that the starter contacts wear out. You get a click but no turn over. This is easy, £10 fix. Often it will start after a few tries.
If it does turn over, then it's either out of fuel/fuel pump burnt out, or something on the engine.
Injector seals often fail which causes difficult starting, but it will usually start after a bit of a struggle and lots of cranking.
The most likely in my mind is starter itself or it's simply got air in fuel system.
When you get air in fuel, it takes ages to get it out.
Turn ignition on, pump pedal 5 times, listen for pump. When pump stops, turn off, and repeat again another 10 TIMES.
Keep priming until you can turn the ignition on and NOT GET the loud whining/whooshing sound.
When you're confident that there is no pump noise to speak of, crank that baby over.
Keep cranking in 30 second bursts. She will go eventually, and when she does there'll be a huge plume of black smoke and you'll feel like a hero, especially when you do it in a workshop