Can you recommend a good laptop for a maximum of 350 euro. I don't know that very well
Depending on what you want to use it for.
It all depends on what you want to do with the laptop, be it office, editing, gaming?
Search the internet for "campus point". On this "website" you can set your search criteria very precisely.
If you have a record of being a student, you can even buy some laptop computers at a discount.
I would recommend a Chromebook. There you also have the Google Play Store and you can install Android apps. Word is also available for Android. As a schoolchildren, trainee and student, you can get this particularly cheaply as an Office 365 subscription. Microsoft Teams is also available for Android.
You can also print with a Chromebook. To do this, you have to have a wireless printer. Then you simply install the printing app for your printer brand via the Google Play Store.
For example this: https://www.amazon.de/...08C7KBYHL/
Chromebooks start extremely quickly and have a long battery life.