Simple explosion not working properly?

So I have a Bomb tool that when you click drops a bomb. 5 seconds later it explodes, and anything it touches that isn't in the "unbreakable" folder in the Workspace will be unanchored. It kinda of works. The explosion's position is the original position the bomb was dropped in. I don't know why this happens.

local debounce = true
local plr = nil

script.Parent.Activated:connect(function()
    if debounce then
        debounce = false
        plr = script.Parent
        script.Parent.Handle.Transparency = 1
        script.Parent.top.Transparency = 1
        local clone = game.ReplicatedStorage.bomb:Clone()
            clone.Parent = workspace.Debris
            clone.Position = script.Parent.Handle.Position
        wait(5)
        local explosion = Instance.new("Explosion")
        explosion.BlastPressure = 50000
        explosion.BlastRadius = 10
        explosion.DestroyJointRadiusPercent = 10
        explosion.Parent = clone
        explosion.Position = Vector3.new(clone.Position + Vector3.new(0,2,0))
        explosion.Hit:connect(function(part, distance)
            if part.Parent ~= workspace.unbreakable then
                part.Anchored = false
            end
        end)
        wait(1)
        clone:Destroy()
        wait(5)
        debounce = true
        script.Parent.Handle.Transparency = 0
        script.Parent.top.Transparency = 0
    end
end)

Also, is it possible to make it so anything on top the brick that is unanchored also become unanchored?

Thanks