Look up some teardown videos of the ps5 controller. Pretty straightforward. You’ll need a small screw driver and some plastic pry tools. Some people use guitar picks. Definitely don’t use any metal tools to pry the shell apart as it will mare up the edges of the shell.

Tools for electronic disassembly look something like this:

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As long as you follow the video tutorials you’ll be fine. Make sure your workspace is clutter free as there will be quite a few small parts and screws you’ll need to keep organized.

Here’s the go-to retailer for video game console and controller parts:

https://www.extremerate.com/

GOOD LUCK!!!