I don't think anyone will be interested in getting ownership of an app that hasn't seen a lot of downloads, to be honest. This said, can't you remove your app

I don't think anyone will be interested in getting ownership of an app that hasn't seen a lot of downloads, to be honest. This said, can't you remove your app from the Play listing? It still exists, but people cannot find it anymore. So it essentially only exist for those who already downloaded it...