Anything under $300 isn't a real fluid head. It's usually just a spring with some oil on it.

You want some weight to hold against camera moves. But are you sure it isn't also locked? Some tripods have locks as well as adjustment knobs/levers.

If you're looking for an upgrade, I'd recommend this: https://www.amazon.com/Image-EG03A2-Stage-Aluminum-Tripod/dp/B00J08LP70/

But ideally, you'd want to spend a little more and get this: https://www.amazon.com/Ikan-EG05A2-Stage-Aluminum-Tripod/dp/B01924TNF2

Smallrig just introduced one at NAB. Wait for the reviews and check it out: https://youtu.be/-7FvRkfye74