alone is used to describe something or someone without any other people or objects in a particular place or situation. It is used to describe the feeling of being alone, isolated, or secluded.
She felt alone in the crowd
He was alone in the dark.
The house was empty and alone.
generally, it is used to express a feeling of sadness or loneliness, but it may also be used positively to describe the feeling of being in a peaceful place with no distractions or interruptions. Common mistakes include forgetting the 'e' at the end of the word, using it as a noun (e.g., 'He had the aloneness'), or using it as an adverb (e.g., 'He felt alonely').
alone is used as an adverb to describe doing something without anyone's help or accompaniment
He worked alone for hours.
She ran alone in the early morning.
I read alone in my room.
it can be used to refer to being the only one in a group or situation, as in 'He was alone in being against the decision' or 'The boys were alone in the park.' Common mistakes include often omitting the 'e' from the end of the word and wrongly using it as an adjective (e.g., 'He felt alonely').