Trouble Code P0171 with check engine light. How do I fix it?

What is your question?

The check engine light came on on my 2008 camry 2.4L Had Autozone pull trouble code. p0171. They suggested MAF Sensor. I replaced and it came back on after about 30 miles. Other suggestions resulted in me replacing the oxygen sensors, the fuel pump, another MAF Sensor, all four coils, PCV, having the throttle body cleaned, having the fuel injectors cleaned. At this point I am dumbfounded. By the way it was looked at by both a mechanic with their own garage and a Toyota dealership.

What makes this problem better or worse?

At stop light it idles rough

How long has your 2008 Toyota Camry had this problem?

few months