Mobile vs desktop traffic

Hi all,

I’m planning to run a paid ad campaign and was wondering if any of you who have experience on this recommend targeting only desktop users, as mobile traffic isn’t as high-converting as traffic from desktop users (or at least that was the case several years ago), and as this is a paid campaign, I need to maximize the ROI. Does someone here have experience on this and can perhaps share some tips for all of us?

The category is WordPress.