Parenting weld not working properly

Help and Feedback Scripting Support
1

I am trying to make a system where you can grab other players, but whenever I try to make the weld, it gets parented to the wrong character’s arm and the Part0 also gets set to the wrong person’s arm even though it is set to the other character

game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(char)
		local hrp = char:WaitForChild("HumanoidRootPart")
		local prompt = Instance.new("ProximityPrompt")
		prompt.HoldDuration = 1
		prompt.ObjectText = char.Name
		prompt.ActionText = "Yoink"
		prompt.RequiresLineOfSight = false
		prompt.Parent = hrp
		game:GetService("ReplicatedStorage").Events.PlayerSpawnEvent:FireClient(plr)
		prompt.Triggered:Connect(function(plr2)
			local char2 = plr.Character or plr2.CharacterAdded:Wait()
			local motor = Instance.new("Motor6D")
			motor.Parent = char2:WaitForChild("Right Arm")
			motor.Part0 = char2:WaitForChild("Right Arm")
			motor.Part1 = char:WaitForChild("HumanoidRootPart")
			motor.C0 = script.RightGrip.C0
			motor.C1 = CFrame.new()
		end)
	end)
end)
2

just swap out plr for plr2

prompt.Triggered:Connect(function(plr2)
    local char2 = plr2.Character or plr2.CharacterAdded:Wait()
    local motor = Instance.new("Motor6D")
    motor.Parent = char2:WaitForChild("Right Arm")
    motor.Part0 = char2:WaitForChild("Right Arm")
    motor.Part1 = char:WaitForChild("HumanoidRootPart")
    motor.C0 = script.RightGrip.C0
    motor.C1 = CFrame.new()
end)
3

local char2 = plr.Character or plr2.CharacterAdded:Wait()
change plr.Character to plr2.Character