add the beef to the pan and stir-fry until browned and cooked through, about 3-4 minutes. Remove the beef from the pan and set aside.
In the same pan, add the diced onion and minced garlic. Stir-fry for 2 minutes until the onion is translucent. Add the peas and carrots and cook for another 3 minutes.
In a small bowl, mix the low-sodium soy sauce, oyster sauce, and sesame oil. Pour the sauce over the rice mixture and stir-fry for 3-4 minutes.
Return the cooked beef and scrambled eggs to the pan. Stir everything together and cook for an additional 2 minutes until heated through.