So at least which processor and how much ram
A good CPU and RAMs. What kind of budget did you think of?
800 max
This would be good: https://geizhals.de/...54576.html
So basically video editing is one of the hardest things you can do to a computer. Therefore, you should consider whether you should rather build a desktop PC for a budget of 800 euro, because desktop PCs are significantly cheaper and you would get more performance, which makes video editing much more convenient.