Which small notebook or tablet with keyboard do you recommend to me?

I'm looking for a small notebook or tablet with a keyboard, as I sometimes have to do something on the go for work. It should have a good display, a good resolution, as I have to use this on the go should the battery life be good.

I searched a bit for Google and found Microsoft Surface Go, for example. What is your opinion about it? Or is there another / better that you would recommend me?

There are cheap Chromebooks

Surface Book, if the budget gives it. Otherwise, there were relatively cheap devices from the Acer Swift series

The Surface GO is relatively expensive, because you get more for the money. I myself use the "Asus VivoBook Flip 14" for the university, for the price that is really awesome. It's small and light, but has more than enough power for office and multitasking.

Is there synonymous with 10 inches? And is it too small then?

A laptop with 10 inches is rare. I can only think of tablets, maybe even Chromebooks.

10 inches is very small. Office is no fun anymore