how to save a value in a pointer with a function? - c++

Question

I'm making a simple linked list with a classic functions. The elements in this list should not be repeated and should be in an order. The function find recieves two parameters: The valor that should be finded and the pointer to save the node that has it. Everything is going well, but the pointer keeps being nullptr because is not saving the current memory address. I can't understand why my pointer is not pointing to the current node. Please Help me.
template <class T>
class simpleNode {
public:
T data;
simpleNode<T>* next = NULL;
simpleNode(T newData) {
data = newData;
}
};
template <class T, class C>
class simpleLinkedListOnePointer {
public:
simpleNode<T>* head;
C comparator;
simpleLinkedListOnePointer <T, C>() {
head = NULL;
}
bool find(T x, simpleNode<T>*& p) {
p = head;
while (p && comparator(p->data, x))
p = p->next;
return p?true:false;
}
bool insert(T x) {
simpleNode<T>* ptr;
if (find(x, ptr)) {
return false;
}
simpleNode<T>* ptrAdd = new simpleNode<T>(x);
if (!ptr) {
ptrAdd->next = head;
head = ptrAdd;
return true;
}
else {
cout << "ESTE ES EL NODO APUNTADO POR PTR: " << ptr->data << endl;
ptrAdd->next = ptr->next;
ptr->next = ptrAdd;
return true;
}
}
bool remove(T x) {
return 1;
}
void print() {
simpleNode<T>* p = head;
while (p) {
cout << p->data << "->";
p = p->next;
}
cout << endl;
}
};```