I have a laptop with an m2 SSD and an HDD. I want to change my SSD (to a faster one with more storage). On my SSD, however, Windows are all important documents and saved games, etc. Ä. Is there a way I can copy the SSD 1: 1 and transfer it to the new one without reinstalling Windows, etc?
Yes, using a cloning program and a suitable USB adapter
Minitool Partition Wizard Free version 9 is also free.
For example https://www.thomas-krenn.com/de/wiki/Klonen_einer_Windows-Installation_mit_Clonezilla
Heise writes how it works and with which programs: