insufficient material draw?

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prasobsukphupradit

https://imgur.com/9YZXn2s

I know I was low on time so I was making pre-moves. But as soon as white moved, it's a draw.

What have I done wrong? Can't I win with these material?

NicCageCanChess

YEAH, THAT LOOKS REALLY BAD.

prasobsukphupradit
Viznik wrote:
You can’t checkmate with just a king, therefore it will be a draw due to insufficient material. I remember when it happened to me for the first time, I was confused. But basically, if you don’t have sufficient enough material to checkmate your opponent and the clock time runs out, it will be a draw.

Yes, but I play black.