If you compare the advantages and disadvantages of symmetric key cryptography and asymmetric key cryptography based only on the number of keys each mechanism needs to create. The less the better.

Under what condition, symmetric key cryptography is better?

Under what condition, asymmetric key cryptography is better?

Under what condition, they are tie?

What you need to find out are

The range of the number of users when symmetric key cryptography is better than asymmetric key cryptography.

The range of the number of users when symmetric key cryptography is worse than asymmetric key cryptography.

The range of the number of users when symmetric key cryptography is as good as asymmetric key cryptography $.$Lin