Problem with rear suspension - not stable
 

I have Dodge Stratus RT Coupe 2002.
The problem is...
I feel instability in the rear of the car when cornering or passing on unevenness at a higher speed.
It also feels when you drive straight and pass unevenness, but if the road is flat the car is stable.
Feeling is shifting the rear of the car.
I changed the shock absorbers - rear, complete compress without springs. Regularity of the car is perfect - I checked twice. No tilt on the tires.

Service mechanics said they did not find any problem with any part on the rear suspension.

But there is a problem. I changed rear shock absorbers with the idea that they are a problem or the top damping pad. Тhe problem is not solved...

What to do? Perhaps the problem is still not visible. I do not understand enough, however, I am a woman ... But I have enough experience in driving other car models and it is definitely a problem and it is not normal for the car to play lambada passing through a small hole or tilting / shifting the rear in a bend.

Has anyone had a similar problem?
Which of the rear axle parts is responsible for this type of stability and can therefore cause such a problem?

I attach a link to the drawing of the rear suspension:
https://tearstone.com/eclipsefsm/34.PDF

Its been a while since ive owned a stratus coupe, but if i recall, mine had a rear stabilizer/sway bar. Your end links may be bad if thats the case. Thats the only thing I can suggest.

I've just buy a 2003 Stratus R/T coupe and it have the exact same problem . Did you find how to solve it?