This really depends on a few things. What's your goal benchmark here? What games are you planning on playing? And most importantly, how long are you willing to wait?
The key part here is the GPU. If you're willing to be patient, I'd recomment getting a 3060ti or a 3060 (comes out at the end of Febuary). Problem is, you probably won't get them for their original prices at the moment (320€ for the 3060 and 420€ for the 3060ti). I'm also generally not a huge fan of nvidia's founder's edition cards, as you will generally get a little more performance and a little more room for overclocking from aftermarket cards. I'm not sure how high they are selling the 3060ti for/are going to sell the 3060 for but generally you can add around 100 quid to the original price for those. Gigabyte is usually the cheapest when comparing aftermarket cards.
If you're not patient you can still try and snag a 3060, but again, availability is extremely limited right now. Either you're lucky or you pay a lot more than you need to. If you don't have the time to wait, and are fine giving up a bit of performance, you can go for the 2060. It's substantially less performance (gpu.userbenchmark.com estimates the 3060ti to be 30% better) but it should definetly get the job done and is still a great card. You can currently get it for 300-400€. So same, price, less performance, you don't have to be patient.
Now RAM, Processor and Motherboard are a lot easier. There are really a lot of options here, but I picked out some that fit your budget and have a bit of room for unexpected costs or paying more for a GPU:
Motherboard: ROG STRIX B450-F GAMING AM4
Great mid-high tier board. Loads of room. Fits 2 M.2's, 4 sticks of ram at a maximum speed of 3200MHz (you really don't need any more) and even a little RGB slapped in there if that's your thing. Currently going for 110€ on Amazon.
CPU: AMD Ryzen 5 2600X
Great performance, reasonable price. 6 cores, 3.6 GHz core clock, 4.2 GHz boost clock. I wouldn't do any overclocking on this if you're not planning on getting a seperate cooler for it (technically your budget would allow for one), but for non OC, the AMD stock cooler is great and does it's job well. With the perfomance this thing gives, you also won't really need an overclock for day to day use and gaming, let's be honest. Also won't bottleneck your GPU in any significant manner. Currently going for 190€ on Amazon.
RAM: Corsair Vengeance RGB PRO 32GB (4x8GB)
I'd go for 4x8GB here. It is highly unlikely you will ever need more than 32 gigs of RAM in your system, and you will get slightly better performance from 4x8 than from 2x16. 3200MHz too, so your Motherboard is used to it's fullest. Also has flashy RGB if that's your thing. Going on Amazon for 195€.
If we assume you spend 400€ on a GPU (could be less) that puts you at just under 900€.