Code P2135, replaced the throttle body four times

I have the car listed above LT model. I’ve replaced the throttle body 4 times! The first time it happened I was experience stalling, jerking, loss of acceleration, etc. Eventually my check engine light came on and I went to the mechanic and got the code read and the code was P2135. The mechanic told me that it was the throttle body so I got it replaced and then a few months later my check engine light comes on again and had the same problems.
I took it to another mechanic and surely enough he told me the same thing so I replaced it along with the accelerator pedal. And then a few months later my engine light comes on again with the same problems. I went back to the mechanic who replaced it before which was in and he said that the part was defective and fortunately I had warranty on the part so he replaced it and that was in February 2021 and everything was good. Not even 2 months later and the check engine light is on. I went to a different mechanic on 04/22/2020 and he read the codes and it was the same P2135. He said that it was the accelerator pedal and or the throttle body so I get the pedal replaced again and literally the next day my check engine light is on. I have had 4 different throttle bodies and accelerator pedals in a span of a year, I don’t think that’s normal. I’ve spent so much money and I don’t think I can afford to get the throttle body replaced again! I intend on going back to the mechanic, but if anyone has had the same problem or knows anything please help! What could be the problem? I’m at my wits end.