is there a way to get username from displayname?

i mean, like, :GetCharacterFromPlayer and vica versa is there a :GetNameFromDIsplayName or something similar?

local Part = script.Parent --Part in the workspace
Part.Touched:Connect(function(It) --The variable "It" will be the bodypart, the parent of the bodypart is the character.
	local Humanoid = It.Parent:FindFirstChild("Humanoid") --Find the humanoid in the Character
	if (Humanoid ~= nil) then --Checking if the humanoid exists or not. If it does, then do this
		local DisplayName = Humanoid.DisplayName --Get the displayname of the humanoid
		if string.find(DisplayName, game.Players:FindFirstChildWhichIsA("Player").DisplayName) then --If we find a player with a displayname just like the humanoids display name, then
			local PlayerTable = {game.Players:FindFirstChildWhichIsA("Player")} --Set a table for the player
			local PlayerWithDisplayName = PlayerTable[1] --This is the Player with the display name, we got the player from the table.
			print(PlayerWithDisplayName.Name) --Now, print the real name of the player with the displayname.
		end
	end
end)

I made a script for a part when you touch it, it gets the players name from the displayname.