As a Spanish speaking person, I think I have a very good level of English, but I still get confused with the use of “by myself” versus “by my own”. Can someone please give me some key ideas (and examples) about when to use which, so I can definitely avoid this doubt?
From an other forum I've found an explanation that seems very clarifying about that:
"Theses two phrases mean almost the same thing, but they are used in different context.
You would say, 'I want to find out about it on my own.' But you wouldn't say 'by myself' because 'on my own' means for myself, and not just 'by myself.'
You could say 'I went swimming by myself', and that would mean that there was no one there swimming with you. But if you said that you went swimming on my own, that could mean that you didn't ask anyone to go swimming with you, that you wanted no company with you.
So by myself indicates that you were alone by chance and on my own means that it was a decision you made to be alone."