fucked by the fickle finger of fate

all fingers and thumbs

Of a person, clumsy or awkward.

burn one's fingers

To harm oneself; to suffer consequences of one's actions.

fat finger

A supposed cause of typographical errors, especially keyboard errors, caused from erroneous key presses or typing errors on touchscreen devices.

fickle mistress

Synonym of cruel mistress.

finger in the pie

A share in the doing of something; involvement.

finger to the wind

An attention to or focus on or awareness of current or prevailing trends, public opinion, or shifting circumstances.

fuck if I know

I have no idea whatsoever

fuck it

An expression of great indifference or nonchalance.