'03 Grand Prix, p0068, hard start, stall, and eventually no start

It’s been very cold lately, so I didn’t think much when my car began having a hard time starting. After a few days it would start, but only drove a few feet before stalling, giving a ‘reduced engine power’ warning.

I plugged in an OBD scanner which gave me an error code p0068. Some internet searching told me this is most likely an issue with my throttle body or MAF sensor.

First I tried cleaning the throttle body (it was incredibly dirty), but the problem remained the same. I tried unplugging the MAF sensor as per this video (https://www.youtube.com/watch?v=Z7eO_dicJ9g&t=322s), hoping to at least get the car to the other side of the rode as we have alternate side parking. But now the car just clicks and doesn’t even try to start, even after plugging the MAF back in.

With some fiddling I realized that the MAF and TP sensors no longer latch in place. When I first removed them I had to lift little latches to get them to move, and it was difficult to pull them free. Nothing seems to have broke, but now both plugs easily pull free even with the latches closed. Could this relate to it just clicking?

Any ideas what I could try? I don’t want to replace any parts unless I have a confident diagnosis, and a mechanic is likely outside my budget, not to mention the tow to get it there. I’m very confused as to why the problem has gotten worse, and why the sensor plugs don’t lock in place.

Let me know if more info is needed, and thanks in advance.