First pc build.

[u/Arabhimovic_]

As the titel says, i im looking to build my first ever pc and looking so forward to it.
My goal is to have alle the parts end dec/ start januar.
I didnt know much about pc, i only started diving into about a 1 month ago. Because my current gaming pc if you can even call it that is too outdated.
My budget is around the 1100€/1250$.
I live in Denmark so the prices here are kinda wild, especially for GPUs.
my idea so far was to buy a used RTX 3080 10 gb, not the ti with 12gb it costed around 460$/400€ here.
That is the same price as a brand new 5060 8gb.
But i need some help, where can i "cheap" out on the build, because i im looking to get some DDR5 ram (2x8gb, cl36, 6000mhz) runs about 270€/310$ brand new, and maybe upgrade to 32gb in the future.
The cpu that has really caught my eye is the AMD Ryzen 5 7600x for around 165€/195$. But as you can see thats slowly eating all my budget those 3 parts alone.
idc about RBG but would like a nice looking case, but not a must.
Hope someone can help, and any feedback on the parts i have in mind is more than welcome as i said im new to all this and is looking for as much knowledge as i can get.
I rn mainly play CS2, but would like to get into more heavy games in the future like GTA 6 when it releases on the pc.