Car will not start & interior lights flicker whenever I try. No noise whenever I turn the key

The problem can be linked to the battery in this case. It could have been a problem with the electricals/wires as well, but just because you said you could jump start the car after several attempts, it rules out the possibility of any faulty wires. You also mentioned that you had the alternator replaced 2 months ago. It can be a possibility that the alternator is not properly connected to the battery and is not charging it. The battery lasted for a while on it's initial charge and now the alternator is not able to keep up or is not charging the battery at all. I dont see any other reason why your car will not start.

2007? Check engine to body grounds for corrosion. Check battery and clean terminal posts. Go over the alternator, a tech may have not done a thorough job or used a poor quality remanufactured one.

Also look for an aftermarket alarm or other battery or fuse box hack that is causing a drain.

Finally be prepared to replace the battery if it is old or fails a load test.

This is basic stuff. Battery is likely, but expensive, so change it last after going over electrical paths. It's a lot to look at but be persistent, your labor is free.

This is 100% low battery! Why your battery is low is different question you should check your car if it's charging when you start it. Easiest way (not the safest) to test if your alternator is charging is to disconnect one side of the battery if the car stalls(dies/shut off) your alternator isn't charging.

Have you made sure there is no cd stuck in the radio,as this could run the battery down ,I had this to happen and pulled the fuse to the radio to confirm this was the problem, battery quit draining, car would start normally