As an advertiser, will it be possible to target desktop and mobile users independently?

I want to advertise with Brave in the future. My app is designed to run only on desktop browsers. Will it be possible to target ads only to desktop users and not, say, Android users? I do not want my ads to show on mobile devices at all.

I ask because Google does not allow this. They only let you decrease the probability that an ad will be shown to a mobile user.