I have an old Samsung notebook, it has been with me for more than 10 years. In recent years I had to change the OS from Windows 8.1 to Linux (KDE Neon), the change has been great and it is running better than ever. The thing is, no matter how much I make change the software, the hardware remains the same. I would like to make some improvements, but from what I have seen, I would only be able to change the SSD it has for a larger one and little more, since the RAM is part of the motherboard.
However, is it possible to expand it or change it for more RAM? I think I have seen that it was possible, buT more delicate and complicated, is it true? Would it be worth to look for someone who can make the upgrade?
As to your last question: It would almost certainly not be worth it.
Yeah, it is basically never worth the effort to de-solder and re-solder RAM. It’s why people rail so hard on it and why you should pay attention to it’s (non-) existence next computer you buy. It hurts you years down the line when what should have been a cheap upgrade is turned into simply binning what you own and buying new.