I Googled a keyphrase for my campaign but I don’t see my ad—why?

Some potential reasons are you are in a competitive industry, you have other key phrases that have proven to convert, there's low search volume, and where you are searching (Google) from.

When do you update the ad copy?

After 100 clicks, we compare the performances of two ads. We build a new ad to compete against the winning one for another 100 clicks.

What if a campaign is not spending all of the budget?

It's possible the impression share loss due to rank includes losing out on impressions that the campaign is eligible for but are very broad so you would not want to show for them anyway.

What do you recommend for a new product launch?

If you are launching a new product, there are a few ideas to get it out there.

Should I run LinkedIn ads?

It is likely that LinkedIn campaigns to warm leads (aka remarketing) could be a good fit, but LinkedIn campaigns to cold leads is only a good fit for a few narrow industries.