The phrase "go in" is a phrasal verb in English that means to enter a place or a space. It can be used in various contexts, from physically entering a building to metaphorically entering a situation or discussion.
Physical Entry: As mentioned, it can refer to entering a physical space.
Figurative Entry: It can refer to entering a discussion or a new situation.
"Go in for": This means to choose or to have an interest in something.
"Go in and out": This means to move in and out of a place repeatedly.
"Go in" is a versatile phrase that can describe both physical entry into a space and metaphorical involvement in a situation.