No offense taken, because you're talking from ignorance. I won't hold that against you.
It's impossible for on-board flash, especially the weak ones on phones, to light a subject well. That's not me being old, that's just ye olde laws of physics. No getting around it.
If your goal is just to capture *something* for a memory, then more power to you and use that flash. If your goal is proper fill, recording the scene as it was, or having control over the lighting of a subject, you cannot do it. If you happen to like the green-and-white skin with harsh shadows, again, more power to you, but most people don't. There's a reason that as you climb the camera ladder away from either the cheapest models or those intended to be pocketable above all else, the flash gets further and further away from the lens.