Issue with 2k14 Dodge Journey?

3 weeks ago my car wouldn’t turn on. We thought it
maybe the keyless key, went to get a brand new
battery for the key. Nothing. We jumped it. Nothing.
Next day someone jumped it with a truck jumper.
Started and charged the battery. Worked fine, 2
days ago was driving on the highway and it turned
the lights and radio off and dashboard blinked
battery. Got in a parking lot and died. Had someone
replace the battery and it turned out. Let it run
because it was cold inside, 20 mins later it died. Or
turned off. Won’t turn back on, the lights are on and
let’s me lock & unlock car. Just won’t start up. Any
ideas?