How to give players damage with a RemoteFunction?

I formatted my weapon as a localscript and I'm trying to fix it to do damage to a player. When the knife is being swung it fires off to the RemoteFunction. This script which should do damage to the player, but it always prints nothing was hit when it does hit a player. Does anyone know what's wrong?

function game.ReplicatedStorage.Knife_Damage.OnServerInvoke(player)
        local knife = player.Character:WaitForChild("Knife")
        if knife.PlayDownStab == true then
                knife:WaitForChild('Handle').Touched:connect(function(hit)
                hit.Parent:findFirstChild('Humanoid').Health = hit.Parent:findFirstChild('Humanoid').Health - 50
                end)
        elseif knife.PlayStabPunch == true then
                knife:WaitForChild('Handle').Touched:connect(function(hit)
                hit.Parent:findFirstChild('Humanoid').Health = hit.Parent:findFirstChild('Humanoid').Health - 25
                end)
        elseif knife.PlayThrow == true then
                Workspace:WaitForChild('Handle').Touched:connect(function(hit)
                hit.Parent:findFirstChild('Humanoid').Health = hit.Parent:findFirstChild('Humanoid').Health - 100
                end)
        else
        print('No Player was hit')
        end
end