This is a classic symptom of bad struts/shocks. Springs bounce by nature. There is no reason to change springs unless they can no longer perform their job or you are looking for a different spring.

Meanwhile, bring your car to a mechanic and ask for a list of things wrong with it. My feeling is you will find the struts are bad and possibly there are a few mechanical items you need to bring up to speed.

Not mine..I feel every bump in the road but no bouncing.. :?

Then your springs are shot, too. Every car I've owned, when the shocks or struts went bad, but the springs were still good, bounced.