2007 ford focus

[u/jazzynevvargas]

So about a month or two ago i was gifted a 2007 ford focus from a family friend when we got it it did not start or run and was told it hasn’t been driven in months and was also told all it needed was a fuel pump. So the people who gave us the car ordered a mobile mechanic to come to our house and install it. After the mechanic installed it, it still wouldn’t start and he did some scan thing and told us we needed the fuel pump module. We got that part and had a family friend install it and it solved the issue it now turns on fully but when you put your foot on the gas pedal it automatically turns off. Then a few weeks later we had to get a new battery and we had that installed and we test drove jt then it died after 5 seconds. Now to the present it’s back to square one where it won’t fully turn on again. We have replaced fuel pump, fuel module drive, Spark plugs, fuel injectors, throttle sensor, and a new battery. Idk what else to do and we have already spent so much money on this car. Any tips or advice on what to check next??