You can try using these steps maybe it can help you to fix the issue.
How to Connect Wirelessly (Screen Mirroring)
The most common way is using the phone's built-in Screen Mirroring feature, usually called Smart View on Samsung phones.
1. Ensure Both Devices are on the Same Wi-Fi: Your Samsung Galaxy A06 and your Smart TV must be connected to the same Wi-Fi network.
2. Activate Smart View/Screen Mirroring on A06:
Swipe down from the top of your phone screen to open the Quick Panel.
Look for the Smart View icon (it may look like a square with radiating lines or a simple mirroring symbol). Tap it. If you can't find it, you might need to swipe left on the Quick Panel or tap the "Edit" button to add it.
3.
Select Your TV: A list of available devices will appear. Select your Smart TV from the list.
