Or it just means the expansion factor isn't infinite, maybe ran out of energy to keep pushing outwards against whatever resistance from the outside or mass need

Or it just means the expansion factor isn't infinite, maybe ran out of energy to keep pushing outwards against whatever resistance from the outside or mass needed to overcome that resistance and like a ball tied to a rubberband, it's may not be stalled but collapsing back over trillions of years, maybe the external force/mass is now overcoming the outward expansion like a bubble in a puddle I am sure there are far better, educated theories but that's just mine.