I would like to buy a lap top soon, but I have no precise idea which brand is ideal and how expensive a good lap top is on average. It doesn't have to be a gaming lap top. One who is still good for research, however, is functional for school, i.e. Power Point, Word and so well coped with, as well as watching Netflix and pages like series stream.
A very pleasant office PC with your requirements costs around 400-500 euro.
Small games are also possible.
Example…
Ryzen 3500u
8GB RAM
256GB SSD
1080p TFT
Just as an example for a 400 euro notebook that more than fulfills your wishes