I can do this, but im not going up. Items feels heavy when I try jump on them in the air. I can fly up only on axe, becouse I know how to grab it. Tell me how to grab every item, like glass, or others. What I am suopoused to do in the air to fly? Please help me.

The key is to grab while your hand and the prop has a high relative velocity, in this case your hands are more likely to somewhat clip into the object.

Jump and grab the object at the same time is one of the ways.