Hi Brenda! I would recommend a gel stain! General Finishes java gel stain is great. And you do not have to sand or prime beforehand! :)
Here is link to their gel stain
And here is a link to how to use gel stain. :)
This video tutorial might help: https://www.youtube.com/watch?v=9aVkzcTMPkY
This tutorial has some great tips on getting a pro look with gel stain. https://www.hometalk.com/5534897/java-gel-stain-to-fix-up-furniture
You need to sand the existing finish off the wood, apply stain, and seal with a poly or wood finish.
Sand the existing finish, clean the sanding dust, and apply stain with a lint free cloth or staining pad.