I've always had success at tabletop roleplay forums, local games stores or Facebook groups etc.

As a DM I've been consistently been finding engaged and reliable players in the few places I lived during the last 15 years.

It's not hard but I give myself permession to not allow players into the group that I don't think fit. That way you will normally end up with a decent bunch of people. And make some friends too on top of a dnd group.