Different sounds are coming

Good evening guys. I think I broke my psychology from listening to all parts of the vehicle, while the vehicle is still running, there is no buzzing etc from the vehicle in the n position, but when it goes to d and r, it sounds like a cizzzzzz. Is this sound normal? Thank you very much for answering someone like me and I hope that the psychology of anyone will not deteriorate like me ...

A normal sound is the solenoid sound in automatic gear. It shows that solenoids are working. Do not get stuck in so many sounds, continue to see the water in the oil. Otherwise it is a pity for both your money and your time.

The voices increase as you listen. Now I am opening the music more. My head is comfortable. :)

Do not get stuck too much, how old are those cars normal things. when you turn on some music, there is no sound.