Are two GHz bad for a laptop? It is about this https://www.saturn.de/...sche-daten?
Well, what do you want to say. It's enough for office, gaming is a breeze. Some, older titles will run on it, with the newer perhaps only with low settings.
And surfing and watching videos is enough?
Not only can you tune to the GHz of a processor. Without going into more detail on the model you mentioned, I can already tell you that you also get something better for the price.
For example, for 600 euro there would be the following device: https://www.cyberport.de/?DEEP=1C26-APU
So you save 100 euro, but have both the Intel Core i5-8300H and the GeForce GTX 1050 both a more powerful processor and a more powerful graphics card. In addition, you have here also a 1 TB HDD + 256 GB SSD installed. Only the built-in RAM is 8 GB less than in the device shown by you, but I would not make myself dependent now. For most games, 8 GB is still sufficient. With 16 GB of RAM you would be on the safe side, but since you will have to go up a bit price if something additional suitable for gambling should be installed.
If you do not want to play, then you should opt for a completely different device, because you need for Office applications, surfing the Internet or similar things guaranteed no 16 GB of RAM and not necessarily a Ryzen 5 2500U. However, I now assumed that you want to play games because of your already made selection.
So surfing is definitely going, videos should look too, but with the graphics unit but something scarce.
Thank you very much ever I just want to surf in the videos look music and the small stuff but not play
Then a device with 8 GB of RAM is enough. At best, even an SSD for more power and a processor from Intel Core i5.
For example, here would be a device for 220 euro less: https://www.cyberport.de/?DEEP=1CA0-02X
Also there you have a 256 GB SSD installed. 8 GB of RAM, which for your purposes as I said are also loose enough and an Intel Core i5-8250U. Incidentally, the i5-8250U is also slightly more powerful than the Ryzen 5 2500U.
If you do not have enough 256 GB SSD, you can of course use a combination of a HDD + SSD, which was also the case with the device you mentioned. In terms of price you would still be under 700 euro.
640 euro - https://www.easynotebooks.de/Notebooks/Lenovo/V-Serie/86563/Lenovo-V330-15IKB-15-6-FHD-Core-i5-8250U-8GB-RAM-1TB-HDD-256GB-SSD-Windows-10-Pro
There's no big difference in terms of price, but there are still 60 euro savings and you have a better processor.
Although the processor is only 2 GHz, it will be better than ever an Intel Pentium processor that only has 2 GHz. So I mean from the performance. Unfortunately, I do not know how far you can go with it.