What phone model do you have specifically? what's the current software version? Settings > about phone > software information > build number (last 4 characters)
Hi, I am sorry to hear of your experiences with your headset and audio output. Besides just the phone itself, you can try troubleshooting the headset itself. If sound is not playing in the headphones, verify if something is wrong with the headphones themselves or the device they are connected to. In most cases, the headphones will be the source of the problem. Carefully inspect the headphones for damage, software updates, or interference issues. Try these steps: https://www.samsung.com/us/support/troubleshooting/TSG01001073/
Please let me know if that helps.