Hey there yusufyz,
CPU upgrades are often not possible in laptops, and when they are, you're always limited by both the socket and the laptop's firmware restrictions (and possibly by your budget and availability of what you're looking for). Do a bit of research on your socket to see what you can fit in it or if your CPU is even removable.
Another thing to consider is that most games require a good graphics processor; those built into processors are not very powerful. You may be better off getting a new laptop or, if you don't need portability, a desktop/tower.
-Laptop components other than Ram and Drives cant be replaced
That's not ubiquitous.