Mistakes and Sin

Can a mistake be just a mistake and not sinful?
What is the definition of a mistake? What is the definition of a sin?
Mistake: didn’t mean for it to happen. Unexpected, or unwanted consequences. Unforseen circumstances. Thinking you’re correct or truthful when you are in fact not.
Sin: God didn’t mean for it to happen. Unwanted consequences; foreseen by God ignored by us. We blame our circumstances but it is in fact our nature. Thinking that we know what is better, more correct than God.

They’re my quick definitions of sin and mistakes. Trying to catch a ball but missing it is a mistake, but not a sin. Or is it an accident? People will do something on purpose, knowing the consequences but thinking they will cope, yet people still tell them "you’re making a big mistake". Do they do it because they don’t have a complete understanding, although they think they do? Does it then have unexpected consequences? And is it a mistake?

Yet God sometimes commands us to act, and that action may have unforeseen consequences and hardships, yet it certainly isn’t a mistake (or a sin (obviously)).
We may try to go our own way but fail, God pulls us back, but is that a mistake?

I’m not answering questions, but am rather trying to put order to thoughts…
I might think about this more but for now this is a good start.