Help me ford mondeo

[Becky]

Hello I am a single mum in Australia lived here for nearly 10 years two boys both full on and on the spectrum and I bought a 2nd hand mondeo. I now have no car and put it into ford only to be told the engine has gone due to the egr valve I have done some research but i am lost and don't know what to do I spent my savings on it a year ago and have problems for 6months now fixed everything except the valve. So please help give me some direction please were to go next or is it just a complete lost thank you 😊