OK it's not little monsters, or don't look under the bed. I think it was an episode of some old show but it might have been a movie. This teenage or possibly younger male kid finds a world under the bed, not sure if there was a door or like a sort of portal opening, then they are in there and they go on this adventure, there were good monsters and bad monsters, and one scene had something to do with like those ball pools that used to be in fast food playgrounds. It's been driving me crazy and every Google search I do keeps coming up little monsters. I remember the main monster was sort of clownish I think. Man somebody help me I remember it vividly but I can't find it anywhere and I want to watch it again.

I've never seen it but it sounds like "Little Monsters."
Little Monsters (1989) - IMDb

Do you remember if the film is animated?

It is definitely not little monsters. I know that for sure. It was not animated, and there is a possibility it was an episode of a TV show like the twilight zone or something like that. Possibly, I'm not sure. It's been driving me crazy man.

Well, I have no idea. Just like you, all I can come up with is Little Monsters. Sorry.

It's less likely but what about, "Don't Look Under the Bed" it was a made for Disney channel release movie, that had that sort of stuff.