Way 1 · best default
I need a bit of space
You need some distance for now. "A bit of" keeps it from sounding like the end.
Examples
I'm not angry. I need a bit of space tonight.
Can we talk tomorrow? I need a bit of space.
In a conversation
A: Are you OK? You've been really quiet.
B: I'm fine, honestly. I just need a bit of space today.
Common mistake
Not: Please give me a space.
Say: I need a bit of space.
Here "space" has no "a". "A space" is a gap or a parking space.
