2013 Buick Verano won’t turn on

Yesterday my car just wouldn’t turn on at all. No lights on the dash. My key fob wouldn’t work to unlock the doors either. My car is a push to start. I replaced the battery in the key fob and that didn’t change anything. I then installed a brand new battery this evening and my car still won’t start. Anyone have any advice what the issue may be or next steps. Thank you