Why is my blinding spell not detecting a player?

Ok so here are some things I need to say, the first is try using UserInputService for the key pressed events as that is the "modern" way to do it. The next thing is that when you're checking to see whether or not a player is hit by the mouse, make sure to find Humanoid otherwise it would be counting parts and such. And last is try using Debris for things you want to be removed. If you're unsure about all that just look it up on google, I'm sure some neat explanations will pop up, anyways, here's the code: Put this in a local script:

local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()
local Players = game:GetService("Players")
local UserInput = game:GetService("UserInputService")
local Debris = game:GetService("Debris")
UserInput.InputBegan:Connect(function(keycode)
	if keycode.KeyCode == Enum.KeyCode.F and Player.TeamColor == BrickColor.new("Really red") then --you can change it to whatever team color you want
		local Hit = Mouse.Target
		if Hit then
			local Humanoid = Hit.Parent:FindFirstChild("Humanoid")
			if Humanoid then
				local PlayerHit = Players:GetPlayerFromCharacter(Hit.Parent)
				game.ReplicatedStorage.BlindPlayerGet:FireServer(PlayerHit.Name)
			end
		end
	end
end)
game.ReplicatedStorage.BlindPlayerDo.OnClientEvent:Connect(function(PlayerHit)
	if PlayerHit ~= Player.Name then
	else
		local Blind = Instance.new("ColorCorrectionEffect",game.Lighting)
		Blind.Brightness = -1
		Blind.Name = "BlindF"
		Debris:AddItem(Blind,8)
	end
end)

Put this in a server script (make sure to put it in ServerScriptService):

game.ReplicatedStorage.BlindPlayerGet.OnServerEvent:Connect(function(player, PlayerHit)
	game.ReplicatedStorage.BlindPlayerDo:FireAllClients(PlayerHit)
end)

Oh and one more thing, make sure to create two remote events (inserted in ReplicatedStorage) called BlindPlayerGet and BlindPlayerDo

Hope this helps! :)