What Apologetics Strategies Can We Use with Agnostics?

Questions about apologetics strategies to use with an agnostic who says it’s pointless to worry about whether there is a God because we can’t know if he exists and whether it’s a bad strategy to debate things like miracle claims with someone who rejects them.

• What apologetics strategies can we use with an agnostic who says we can’t know whether there is a God, therefore it’s pointless to worry about it and you should just live your best life?
• If someone thinks the stories of the Bible can’t be true because there isn’t enough evidence to support things like the Nephilim or miracle claims, should you debate them about these things?