Adjust look vector velocity to go slightly left or right

Hello, I am making a tool where a player can throw a bomb to the direction he is currently facing. How would I modify it to make it go slightly left/right rather than going on a straight direction? Thank you!

This is the line that I currently use.
bomb.Velocity = Vector3.new(0, 70, 0) + character.HumanoidRootPart.CFrame.LookVector * 30

CFrame.LookAt(p1,p2).LookVector || you can use dot product of walk direction and lookvector, there are many ways