Enabling status bar display will only showcase the latest 3 notifications on the status bar.
Configure status bar display on Samsung Galaxy J2 Pro 2018 following the provided instructions:
Step 1: Go to 'Settings' and select 'Display.'

Select 'Display.'
Step 2: Choose 'Status Bar.'

Choose 'Status Bar.'
Step 3: Turn on 'Show only the latest notifications.'

Turn on 'Display only the latest notifications.'
With that, your setup process is complete. Wishing you all success.