I had a very similar experience with my previous car. Over time, factory software can start to feel a bit "tired" as parts age, but a professional calibration can work wonders. I actually used montetuning.com to help refresh my engine's logic, and the difference was immediate. The idle became much smoother, and the hesitation during acceleration completely disappeared. What I really like about their approach is how they optimize the fuel-to-air ratio to make the engine run more efficiently. You should definitely take a look at their specialized performance section here
https://montetuning.com/monte-gt/ It explains a lot about how they refine the driving dynamics. It honestly felt like driving a new car out of the showroom again. It’s a great investment if you plan on keeping your vehicle for a few more years!