自行 (zìxíng): By oneself (Adverb) — Meaning & Stroke Order

He decided to repair the bicycle by himself.

He did not handle the crisis independently; instead, he waited for instructions from superiors.

This weekend, I plan to assemble the newly bought bookshelf by myself, which should be quite interesting.

The company encourages employees to arrange their working hours independently.

Due to a system malfunction, users need to back up their data independently and restart the device.