> I have never seen a helpful ad

There, I fixed it!

Actually it should be:

> I have never seen an ad in google, because I use adblockers

I sought out the He Man trailer because I thought I'd be interested in it. I decided I was and will watch it at the cinema next month.

That was a helpful advert.

I also sought out the Supergirl trailer and decided I wouldn't bother seeing it. Again a helpful advert.

In both cases I chose the advert.