by oneself

Prepositional phrase

rare

Japanese Meaning

ひとりで、誰の助けも借りずに行う状態。 / 単独で、他者の援助なしで行うこと。 / 自分自身だけで行うこと（自立的に）。

One can learn to cook by oneself.

一人で料理を学ぶことができる。

Sense（1）

Alone; without assistance or help from others.

I have always wondered why shoe salesmen think I can't tie my shoes by myself.

Sense（2）

Alone, without another's immediate company

She sat by herself in the corner, waiting quietly.

Sense（3）

(rare) Used other than figuratively or idiomatically: see by, oneself.

He kept the gun by himself at all times.