Where do I get the keyboard as a part from? I bought a keyboard from a seemingly branded seller on Aliexpress and the keyboard was really shit. The spacebar didn’t balance at the edges and all the key felt mushy.

I also bought a battery from iFixit and got two warranty replacements and not a single one lasted more than a few hours before bricking itself. As in the battery still measured a voltage and it could keep the ram contents in sleep but the controller/battery info no longer showed up in macOS.

I can do these repairs as difficult as they are but where do I actually get the parts from?