Confused on what my car issue is. PLEASE HELP!

I am a college student with a 1998 Toyota Camry LE. I have only had it for a
year but not prior problems until now. Flash forward there was no problems
until now. My car started having these issues of stalling and the idle being
weird. I myself to save a lot of money changed the battery, alternator, and
IAC all in that order. But still I receive a check enginle light and still looses
power when I drive Just to get my car assessed it cost a huge fee. I have
already gotten the free autozone check. I am afraid to drive the car
anywhere because I know it will stop. I have been holding out for this long to
go to the mechanic because they will suck your wallet dry but I know it cant
be anything major since I have done alot of work on it already. I have done
my research and read and have seen that 1 of these 8 could be the problem
1. Temperature Sensor 2. Loose Wire 3. ETC Sensor 4. EFI temperature 6.
EGR Valve 7. Fuel Pump 8. Fuel Pressure Regulator .Please help!