The warp bubble doesnt make your ship intangible, it doesnt just pass through objects, if that was the case the ship wouldnt need a deflector dish. Maybe you dont understand how vast space is, and in all of the warp timelines save for maybe Cochranes warp flight they have star charts and sensor scans to make course corrections off of.
I never said your ship is intangible. Your ship very much exists as does the planet. When you warp space though, to an outside observer you could potentially look like you just rammed into a planet.