Examples of aggresive playstyle supports and how to play aggressively to choke the map against the enemy

As i review some of my past posts, I noticed that some are suggesting aggressive supports. What does it mean to be aggressive? Is it early offensive wards? I am really sometimes worried when warding cross country when it means dying after planting the wards.
I can think of aggresive supports are those who can harass and pick off early?
I really am getting bored of 40-60 mins game where people get so much beefy and so hard to fight into.
How do you manage or how do you be aggressive when sometimes being behind on networth and levels or other lanes got dumpstered. How to recover and itemize when this happens?
Can you suggest supports and their items and skill builds?