Issue with Roblox Physics

I’m trying to make a rocket that goes straight up but I can’t make one that is truely stable.

I’m just playing around to learn more about how constraints work but I don’t have much experience with physics & constraints and need some tips.

Its quite simple and I could use a prismatic constraint I think but I’m planning for this rocket to be movable side-to-side in the future.

As of now im working with linear velocities. Should I use the deprecated constraints?