Help with shock absorber malfunctions

There are several unmistakable signs of a decrease in the performance of shock absorbers:

• Steering vibration the wheels do not have constant contact with the ground.
• The body continues to sway after driving over an uneven area.
• «amorphous» the behavior of the car when cornering, while the inner wheels in relation to the turn are not sufficiently pressed to the ground, and the outer ones are not sufficiently unloaded.
• Multiple interrupted braking trail at full braking (not with ABS).
• Uneven tire wear and increased tire wear.
• Significant traces of oil on the outside of the shock absorber up to the shock absorber spring plate. On the contrary, slight leaks are normal.