Alternative form of raise red flags

A person who goes to bed early and wakes up early will lead a more successful life.

Not any person or thing whatsoever.

Alternative form of grasp at straws

Without any doubt or hesitation at all.

An organization is only as strong or powerful as its weakest person. A group of associates is only as strong as its laziest member.

(US, idiomatic, predicative) Too late and too feeble to achieve the desired effect.

(US, idiomatic) Adverbial use of the adjectival form.

(idiomatic) To adapt to something naturally and effortlessly.

(idiomatic, archaic) The worth of some trifling or insignificant matter; a whit or jot of value.