We are sorry to hear about your experience with the recent updates on your beloved Samsung Galaxy A23 having multiple issues ranging from loses media sound to video cannot played online.
I feel you and understand it, expecting the device to perform better, and if it happens to my device, I'll get worried too.
Before you try out the below recommendations as to your solution, be sure to check if your device's software is updated with the latest version. Please check how to update your mobile device's software in the following order.
Step 1. Go to Settings > Software update.
Step 2. Tap on Download and install.
Step 3. Follow the on-screen instructions.
While installing or using the application, you may be prompted to give your permission to access various functions. For example, Email may ask for permission to see your Contacts, so it can import your friends' contact info. If you have given permission by accident, you can always change the settings. App permissions can be managed through the Permission manager.
Step 1. Go to the Settings, and then select the Apps menu.
Step 2. Tap on the more options (three vertical dots) icon.
Step 3. Choose the Permission manager.
Step 4. You can check the list of permissions. Select the feature for which you want to check permissions.
If that doesn't fix the problem, you may submit an error report through the Samsung Members app as follows:
Step 1. Long press Samsung Members icon on Apps screen and tap Error reports.
Step 2. Tap OK on agreement popup to send system log data.
Step 3. Select Symptom category "Sounds/Vibration" and "Settings/System".
Step 4. Describe the problem in details and SEND.
If the issue persists, you may bring your device to the nearest Samsung Authorized Service Center in your area. Rest assured that your device will undergo an assessment to pinpoint the root cause of the issue. They may guide you and offer solutions to restore it.
or book an appointment with the Samsung Members app as follows:
Support > Book an appointment to set one.
Should you need further assistance and guidance, you may contact us via our online Samsung Customer Care support channels below.