无依无靠

orphaned of all one's immediate relatives (idiom); no one to rely on; left to one's own devices

to stand alone; to have no one to rely on

lit. widowers, widows, orphans and the childless; fig. people with no one left to rely on

wandering ghosts without living descendants to pray for them (idiom); person who has no family or friends to rely on

isolated and without help

to look up and see no-one familiar (idiom); not having anyone to rely on; without a friend in the world