All objects in the earth are under force of gravity, right?
Think an object, like human, has density about 1t/m^3
Water has 1t/m^3 too.
Imagine a person in water. the water at the top of it and the water under it are equal forces him and create a balance.
So; The total force applied to the person by water is zero.
if the force of gravity was present, the person would move downward in the water. but it is not. Anything that is equal to the weight of the self-weight of the water remains in a fixed position within it, not falling down.
If you have read this writing in 30 seconds so you've saw a disprooof which disproves the gravity in 30 seconds. it's your problem that you haven't gone to a fast reading course.