Way 1 · best default
I need a bit more time
Simple and honest. Works for a decision, a job or a reply.
Examples
I need a bit more time to read through the contract.
It's nearly done. I need a bit more time to check it.
In a conversation
A: So, are you taking the job?
B: I need a bit more time. Can I tell you on Monday?
Common mistake
Not: Give me more time.
Say: I need a bit more time.
"Give me" sounds like an order. Talking about what you need sounds much softer.
