How Not To Blunder A Game

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Recently, I played a game in which I lost in the most embarrassing way possible in the endgame, even though I could have checkmated the opponent. The game is attached below: https://www.chess.com/analysis/game/live/5229547273?tab=analysis. Worst of all, this blunder comes right after I blundered to the same opponent in the endgame the previous match I played. I want this to be an example of how not to play, so make sure not to copy me. 

Sneakiest_Of_Snakes
Thank you for your game :)