Example output
Sure, I can help you with that. Here are the components that I recommend for your gaming PC build within your budget of 1300 euros:
CPU: AMD Ryzen 5 5600X - 299 euros
https://www.ldlc.com/fiche/PB00389276.html
GPU: NVIDIA GeForce RTX 3060 - 459 euros
https://www.ldlc.com/fiche/PB00403013.html
Motherboard: MSI B550M PRO-VDH WIFI - 129 euros
https://www.ldlc.com/fiche/PB00389044.html
RAM: Corsair Vengeance LPX 16GB DDR4 3200MHz - 89 euros
https://www.ldlc.com/fiche/PB00245239.html
Storage: Kingston A2000 500GB NVMe SSD - 69 euros
https://www.ldlc.com/fiche/PB00290429.html
Power Supply: Corsair TX650M - 89 euros
https://www.ldlc.com/fiche/PB00300956.html
Case: Phanteks Eclipse P400A Digital - 89 euros
https://www.ldlc.com/fiche/PB00285170.html
Total cost: 1233 euros
These components should give you a great gaming experience with high performance and reliability. I have found the best prices for these components on LDLC.com, but you can also compare prices on other sites like Amazon, Cdiscount, and Materiel.net to see if you can find better deals.
Once you have all the components, you can follow online guides to assemble the PC yourself or take it to a local computer shop for assembly.