Depends on the details IMO.

I always have my birthday, age, etc slightly off if possible for instance. I don’t claim to be 130 or something ridiculous. It’s all believable, near-accurate but not too near stuff for me.

Even comments on forums. I lie (in ways that don’t matter/deceive the people being talked to). I lie about my age, my family makeup, etc. when the info is relevant but doesn’t need to be specific. Example: if I’m 40, I’ll say I’m 43 (or in my mid-40’s or some other general statement) if being in that age range is what matters. If being 40 is what matters, well…I likely don’t need to comment badly enough to give that away.