Sometimes I have dust, crumbs, pieces of paper, etc... on my desk. I tried taking them off with my hand but they just stayed there. I have an IKEA wooden desk. Do you have any idea how I could clean it?
Place a damp (not wet) wash-cloth, dust-cloth, clean rag, or sponge between your bare unembellished hand and your IKEA wooden desk when you next try removing dust, crumbs, pieces of paper, etc… off your IKEA wooden desk.
Repeat as necessary.
This modification to your procedure should improve your performance.
Good luck. Please let us know about your progress.