Sometimes, when attempting to access the Internet, we may need to clear network settings to enable normal Internet connectivity.
Here's how to reset network settings on Samsung Galaxy Note 8:
Step 1: Access settings and select General Management.

Access settings and choose General Management.
Step 2: Select Reset.

Select Reset.
Step 3: Choose Restore Network Settings.

Select Restore Network Settings.
Step 4: Choose Delete Settings.

Choose Delete Settings.
That completes your setup process. Wishing you success ahead!