Starting but not working

Hi aleyküm friends peugout 206 sw I have a 2004 model car 2 days ago I got into the car, I started the car, the car did not work, the starter is working well but it did not work, I waited 2 hours later, I tried again, the car worked in a press yesterday, I got into the car again, the same problem happened. Is there not a situation like this before?

it has air and / or fuel is not going to the engine.

My teacher tried to press and start the gas when it was not working.

if you have changed the diesel filter soon, so can you

Is there an oil leak in the engine block in your vehicle

Friends, thank you for the comments, I made the gas pump malfunctioned, now there is no problem, we gave 90 lira pump and gasket 50 lira master