I hope to see the replacement ssd and ram tutorial

So, if you've just picked up a new SSD to swap out your old one, here's the thing: your new SSD is going to be totally blank, no file system on it at all. So, the best move is to clone your current drive to the new one, just like MRMAX1984 suggested in reddit. That way, you won't lose any of your precious data.

Ifixit is a great place for this kind of stuff, they've got plenty of tutorials. Here is a videos that might be super helpful for you. You can find more tutotials on ifixit.

How to Upgrade or Replace the SSD In Your Steam Deck OLED!

Also, you'll want to figure out which motherboard you've got, so you can pick the right SSD for it. You could always try these guys in China https://www.jakelectronics.com/category/...