Why is my 2003 mitsubishi lancer es keep having this issue

What is your question?

2003 mitsubishi lancer es. I took to repair shop ..3times both of my O2sensors were replaced 3 times my mass air flow sensor was replaced and 3 times my fuel pump was replaced..so 3 times my vehicle was in the shop and 3 times each item was replaced...my mitsubishi is back for the 4th time...the has a hard time starting or idling..I put in drive and it won't move forward even when its idling with hesitation.what could the problem be because this has cost me approx $2000.00. Help please if you have a idea what's going on

How long has your 2003 Mitsubishi Lancer had this problem?

3 months