на своем

on one's own; on one's own...

→ на
phrase Rare #42,942
on one's own; on one's own... The ending of своем agrees with an implied masculine or neuter noun, such as поле (field), бизнесе (business), лице (face), or горбу (back). Depending on the verb and noun, на своем can mean “on/from one's own” or “on one's own [body part or property].”
RU: Она хорошо зарабатывает на своем бизнесе.
EN: She makes good money from her own business.

На своем поле.

On home turf.

— Поле чудес (1989)