If u r born Muslim and grew up in a muslim family, then you should not change the name your parents gave u as it is disrespect towards them. The exception is if the name you were given has a bad meaning or something that doesnt reflect good.
Same aplies for someone who reverts to islam. Unless the name is bad, no need to change it.
It is not known from the Sahaba that they chnaged their names when they embraced Islam. They were still called so and so, son of so and so during the time of jaahiliya and still continued to be called similarly after ... with the exception of some whom the prophet pbuh told to chnage due to its bad meaning.
One who reverts may add an arabic name for example someone may be called Bilal Philips or McDowell Aboo Zaynab Tawfeeq Ibn Hosley or Aboo Tasneem Daawood Adeeb Moosaa Richardson, all are actual names of students of knowledge, who reverted and studied at Madeena Universit.
There are already fataawa concerning this, by major scholars ... just a matter of finding them inshaAllah