Packaged game doesn't load levels

Hello internet, So every time I package my game it only loads the default level (which is a main menu) however when I click the button to load the next level, it does not work! I tried going into the package setting and adding all the maps and it still doesn’t work… I made a new project and made a simple trigger that loads a new level and then packaged that game and it works! However in the project I need it for it doesn’t!

PLEASE HELP because I need this for a school project that’s due soon!

I will be eternally grateful for help! thanks for your time, Bry Guy