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Mario Party might seem just a casual game but ultimately its still competitive in nature and its better to get into the game with that kind of mindset. Hopefully Kronii soon understands that to be competitive, its not just about wanting to win but also understanding that there are gonna be people who lose and it could be herself there. Its better for everyone to get into the mindset that they are trying to beat each other so that there's no hard feelings when one loses and to avoid giving pity that can lead to making things awkward in the future when the one who was pitied can overtake the one who gave pity.
Things worked out by the end because of the luck of the bonus stars, but say none went to Kronii, she'd have created a pretty awkward atmosphere for the others and winner might not feel like bragging/proud at winning in seeing her feeling down.
Otherwise if you don't consider that you might be the one who'll lose out and keep your act together, it can cause some drama. See the Gura situation in Among Us in the past. Through Gura saying stuff like "it's not fair" on not being an imposter and dying a lot, it made the other players look like bullies for trying to win.