here goes

phrasal

— used interjectionally to express resolution or resignation especially at the beginning of a rash, difficult, or unpleasant undertaking

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here goes spoken phrase

used when you are going to try to do something and you are not sure whether you will be successful

I’m not much good at making speeches, but anyway here goes.

Thesaurus: ways of saying you are not sure_synonym

Main entry: here

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an expression indicating that one is about to start something difficult or exciting

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here goes (nothing) — see ↑here, 1

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Main Entry: ↑go

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here goes (or chiefly US here goes nothing)

informal

— used when you are about to try doing something new, difficult, or unpleasant

It's hard to explain, but here goes. [=I will try to explain]

I've never skied before, so here goes nothing.

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Main Entry: ↑here

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ˌhere ˈgoes idiom

(informal) used when you are telling people that you are just going to do sth exciting, dangerous, etc.

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‘Here goes,’ said Grace and took a deep breath.

Main entry: ↑here_idiom