2002 Daewoo Lanos wont start

I understand how agravating this can be. But I would like you to perform key off battery drain test.
The most effective way of checking that codition is to use an ammeter in series with the negative battery cable and the negative battery post.
Make sure the ignition switch is in the off position at all the time during the test. All courtesy and accessory lights must be off.
If an excessive drain is displayed, remove the fuses from the fuse block one at the time.
When the specific fuse powering the circuit with the drain is removed, the high voltage reading will stabilize to a normal reading.
Or if there is no drain at all,
let me know when you come to this point.