I noticed that Russians are using the word собираться as "going", for example : "он собирается выиграть = he is going to win".
In the lesson they taught us that the future in russian is expressed only with two structures:
1. он выиграю = He will win
2. он будет выигривать = He will be winning
Can please someone explain me this new form of future with собираться. It can be used as future? Is it future? Can be used in all occasions?