The rules give it more of a purpose as a ranged weapon but I don't see anything that says I CAN'T use it as a melee weapon
KOTL All Stars | Chessnerd1320 vs AustinXJet

Actually, there is a rule that says that.
Bone to Pick (C)- Sans throws a bone or summons the bone from a surface like the ground to attack an enemy.
None of these say it can be a melee.

To dodge the giant hat I use Quick Dodge to run around it and get in front of Austin.
Then I summon a bone in my hand and whack his head with it while shooting a laser at his legs.
ok but you DIDN'T do that.
also, i'm pretty sure that would damage and kill you because you're picking up a thing that inherently deals damage.

But none of them say it can't be melee
It gives 2 options, none of which are melee.
Fair.
But I don't think I'd take damage from my own bones. That makes no sense.
Also, both of us were blocking attacks with bones, so is that not allowed either?

Yeah, that makes sense.
You can summon a bone which blocks an attack, because technically it's also an attack that's been blocked by another, as long as you're not holding the bone.
To dodge the giant hat I use Quick Dodge to run around it and get in front of Austin.
Then I summon a bone in my hand and whack his head with it while shooting a laser at his legs.
So we rewind to here
So, instead of running toward Austin with Quick Dodge to whack him, I quick dodge backward and to the left.
Then I fire a laser at his stomach

To dodge the giant hat I use Quick Dodge to run around it and get in front of Austin.
Then I summon a bone in my hand and whack his head with it while shooting a laser at his legs.
So we rewind to here
So now it is just a laser at my legs? Or should CN get a chance to change his action?
That is fair.
but can you even use bones as non ranged weapons in the first place?