Having Mark as read button on popup sms notification

[Android Central Question]

I recently bought note 20 plus, I had note 5 and all the sms had mark as read button. Now I have a single line notification with no mark as read button.
Plus, the mentioned single line, has not enough useful amount of info. e.g. Banking Passcodes. How to show more of my sms on popup notification? Also I want my mark as read button.
Thanx