...is losing your train of thought and making basic blunders that you would not normally make in a live game.
Classic example: https://www.chess.com/game/daily/671897713
OK, yes, you could avoid this by taking the time to fully re-evaluate the position after every move, and some people do. But many do not.
Setting up conditional moves can also help, especially in forcing lines. It doesn't help as much when the lines are not as forced for your opponent.
when you lose 10 matches in a row because of this
You have a black dog and I have a black cat.