Is it somehow possible to increase the Vram of the graphics card to 2 GB?
All programs show me that it only has 1 GB and that it is not adjusted automatically, as is often described?
AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx 2.1 Ghz
Is that normal or do I have to / can I do something? Bios (EFI) I can't get in, can't be selected.
The Ryzen 3500U grabs the ram from your system for its graphics memory. It doesn't have its own videoram.
When the 1GB is used up, he continues to use RAM from the system. This functionality makes graphics cards with their own RAM slower. With APUs (graphics chip on the processor) that doesn't matter.