How can I smoothly jump to the desired height when I press the ProximityPrompt E key?

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#1

How can I smoothly jump to the desired height when I press the ProximityPrompt E key?
What should I do?
Right now, when I use the following code, it feels awkward and like a teleportation jump:

-- test1 code cframe using
humanoid.RootPart.CFrame = humanoid.RootPart.CFrame * CFrame.new(0,10,0)

-- test2 code LinearVelocity using
local attlineVel = Instance.new("Attachment")
	attlineVel.Name ="attLineVel"
	attlineVel.Parent = humanoid.RootPart
local lineVel = Instance.new("LinearVelocity")
	lineVel.Attachment0 = attlineVel
	lineVel.VectorVelocity = Vector3.new(0,10,0);
	lineVel.MaxForce = 1500
	lineVel.Parent = humanoid.RootPart

robloxapp-20230406-2301128.wmv (1.1 MB)