Montero sport won't start

Replaced battery and, when I did, the alarm went off. Tried to start suv while alarm going and totally dead. So I hit the remote to stop alarm and it still won’t start or even turn over now. It barely turned over with old battery, but at least turned over, but after alarm, no clicking, no nothing.

Montero Is The Model, Correct ?
Make And Model-Year ?

CSA