local Players = game:GetService("Players")

local USERNAME = "Cozecant"

-- First, get the user ID of the player
local userId = Players:GetUserIdFromNameAsync(USERNAME)
-- Then, get a FriendPages object for their friends
local friendPages = Players:GetFriendsAsync(userId)

-- Walk the pages, collecting the username of every friend. Each page entry is
-- a table of information about the friend, including Username.
local usernames = {}
while true do
	for _, friend in ipairs(friendPages:GetCurrentPage()) do
		table.insert(usernames, friend.Username)
	end
	if friendPages.IsFinished then
		break
	end
	friendPages:AdvanceToNextPageAsync()
end

print("Friends of " .. USERNAME .. ": " .. table.concat(usernames, ", "))