How can I contact you in private?

Can I use the A P I for searching user by NAME?
Can I use the A P I for weekly tournaments wins/loses?
Can I use it for user’s ranking by name? For example user “The Night King” and to show me the user and his ranking?
Can I use it for free games which are not for the ranking and if two teams make free games to see which team is the winner and which is the loser?

Hi,
Of course, you can use it in mobile applications that you will make with Flutter (dart).