Need step-by-step help replacing OEM keyboard

I have an E5-771G model Acer that suffered some liquid damage to the keyboard. The keys stick terribly now but the computer survived, I just need to replace the keyboard. After some research and $40, I finally have the correct component here. I thought I could open the front of the keyboard as shown in a YouTube video I found of a similar laptop model, but unfortunately this isn't the case. My battery doesn't even come off from the outside. I could really use some help in figuring out how to safely disassemble and reassemble this. Tysm in advance.