Unity Build installs but leads to a black screen.

Hi, I’m pretty new in this world, and I’m trying to build and run my first unity project but I can’t. I can install it on my phone and everything but when I try yo open it, it pops the screen that says “Made with Unity” but then leads to a black screen where nothing happens and my game doesn’t work.
Can anyone help me please I’m so frustrated and I need it for tomorrow.
Thanks.

Alright, I’ve finally found out how to solve it. I just had to change my project to 64bit by following the steps in this web.