Insert an object pointer into a map of maps through emplace() does not work

I'm trying to insert an pointer object to a map through emplace() but it does not work.

I've created a simple representation of the problem below. I'm trying to insert to newFooList pointer object type Foo*.

I can't seem to find a way to create a type for FooMap* in std::map<int, FooMap*> m_fooMapList. Should it be done with the new on the second field of the map.

#include <iostream>
#include <utility>
#include <stdint.h>
#include <cstdlib>
#include <map>

class Foo
{
    private:
        int m_foobar;
    public:
        Foo(int value)
        {
            m_foobar = value;
        }
        void setfoobar(int value);
        int getfoobar();
};

class FooMap
{
    private:
        std::map<int, Foo*> m_newFoo;

    public:
        FooMap() = default;
};

class FooMapList
{
    private:
        std::map<int, FooMap*> m_fooMapList;
    public:
        FooMapList() = default;
        void insertFoo(Foo* newFooObj);
};

int Foo::getfoobar(void)
{
    return(m_foobar);
}

void FooMapList::insertFoo(Foo* newFooObj)
{
    if(m_fooMapList.empty())
    {
        std::cout << "m_fooMapList is empty" << std::endl ;
    }

    //m_fooMapList.emplace( newFooObj->getfoobar(), newFooObj  );
    // Need to find a way to insert newFooObj  to m_fooMapList
    m_fooMapList.second = new FooMap;
}

int main() {
    FooMapList newFooList;

    for (auto i=1; i<=5; i++)
    {
        Foo *newFoo = new Foo(i);
        newFoo->getfoobar();
        newFooList.insertFoo(newFoo);
    }

    return 0;
}