why has not caculated 1 point when game ended with draw

hi;
i m wandering that why not add 1 point when i was finished the game with draw and my opponent take 1 poınt?
however the score showen as 1/2 ?
here is the game :

Lichess recently added a draw streak rule: "When a player has consecutive draws in an arena, only the first draw will result in a point, or draws lasting more than 30 moves. The draw streak can only be broken by a win, not a loss or a draw."

You can read all tournament rules here:
lichess.org/tournament/help?system=arena

In your case the drawn game came after a draw and 3 losses during the tournament, so it was part of a draw streak and was not counted as a point.