If you get along on your own, with no assistance from another person, you can say that you fend for yourself.

A solo hiker on the Appalachian Trail fends for herself, managing the challenges without help. When the verb fend is used this way, it is almost always followed by "for oneself" or "for himself" or "for herself," and it's been in use since the 1600's. It originated as a shortened form of the verb defend, from the Latin root defendere, "to ward off, protect, or guard."

Definitions of fend

v try to manage without help

“The youngsters had to fend for themselves after their parents died”
Type of:
contend, cope, deal, get by, grapple, make do, make out, manage
come to terms with

v withstand the force of something

“The mountain climbers had to fend against the ice and snow”
resist, stand
remain firm, stand
hold one's ground; maintain a position; be steadfast or upright
Type of:
defend, fight, fight back, fight down, oppose
fight against or resist strongly

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