Yes, exactly, density and buoyancy, not gravity.
Just like we aren't fighting gravity every time we jump, and birds aren't fighting gravity when flying.
Even the official version is that the electric force is 36 orders of magnitude stronger than the gravitational attraction.
So according to the official narrative, electrical forces hold our World together.
https://youtu.be/c9a7PypXWEI?t=817
Mercury isn't anti-gravity fluid.
https://youtu.be/c9a7PypXWEI?t=959
The rest of this video also shows other good experiments.
Two factors have been proven to play a role in what makes an object go up or down - density and buoyancy.
Electromagnetic forces set the default direction (down) and play a role in the up or down direction.