Both phrases are commonly used by native speakers. The first one is a bit slang. The second one is very slang as well as metaphorical/figurative.

Those are idioms, not slang. "Slang" expressions are tied to specific subcultures or are transient or faddish.

They are colloquial expressions, meaning that they are examples of informal, everyday language.

I wouldn't say they are slang and they are often used by native English speakers.

colloquial expressions.