[UPDATE] I ended up fixing it, I glued the spring back to it's place and the button works, keyword "works" because I have to press down on it instead of tapping the Right shoulder button
It just fell apart kinda, the spring and the button just fell apart
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I mean, I could try replacing the case, the screen flickering could be due to the ribbon connecting with the screen
Originally I took it apart to clean it a bit as the shoulder buttons would click but not really register. I pressed on the Left shoulder button while trying to unscrew something else and it just fell apart. I know I'd be "wasting my time" repairing this but I was wondering if I could get better...