Is there a way to get a smoother ride in a 1995 Geo Tracker like different shocks or something?

No way that is cost effective. Changing shocks will not help as the Tracker was not designed for a smooth ride.

buzzzzzz.

no , they sell progress rate springs for all sidekicks

Google it , they are popular

and easy to install if you can manhandle a wrench.

http://www.kick-fix.com/

also P205 stock tires and set pressure to door sticker value, min is 28psi.

over pressuring them causes bad stopping and traction and harsh ride.

put 300 lbs sand in rear. sand bags. mother in law?

or go to Mexico and have them torch your spings (sorry that works but is unsafe)