Destiny Bond Not working

25% of the destiny bond’s I use aren’t working. The move goes through, but when my pokemon gets knocked out, my opponent’s doesn’t. Am I doing something wrong, or is it the game. Plz let me know.

Just to cover all bases, is your Pokemon being knocked out by the same Pokemon that it used Destiny Bond on? Destiny Bond doesn’t work if the Pokemon switches out.

Yes. They are the same pokemon.