Tinny black holes

New here, sorry if I’m pestering with a dumb question but:

Can a tinny black hole (let’s say, with an horizon the size of a ping pong ball) exist and keep existing indefinitely in « normal » outer space conditions (as oposed to a gazilionth of a second after the big bang)?

My skepticism derives from black holes being held together by gravity. It follows that they need a lot of mass to generate such gravity, creating a lower limit to how massive, therefore large, they can be. Wouldn’t a tinny black hole, if it could be assembled by some kind of implosion, then instantly disperse without such intense gravity or other external force holding it together?