Oil pump ford expedition (99)

The complaint is still unclear to me.

You “topped off” the oil. Well, how low was it, how much oil did you add, did it fill it to the MAX level, and did that red oil light come on?
Was it rattling, clanking, or whatever when it “stalled” the second time?

If the oil light was on, the engine was clanking, etc. then you DO have engine damage. The only question is to what degree.
Smoking has nothing to do with it; the problem will be in the crankshaft and cam bearings, etc.

I’m still dubious about a broken oil pump being the cause of this.
Exact details need to be provided to help in any attempt to figure out what’s going on.

I actually own and drive Ford products and get long service out of them. As I always state, the vast majority of problems are not caused by the vehicle, but the owner.