On the Samsung keyboard, a different keyboard layout can be selected depending on the language; on the German keyboard, in addition to the standard keyboard, the QWERTY layout or the 3x4 keyboard can be changed.

Android 10 (One UI 2.0)
Step 1:  Open the  Settings
Step 2:  Tap on  General management
Step 3:  Tap on  Language and input
Step 4:  Tap on  On-screen keyboard
Step 5:  Tap on  Samsung Keyboard
Step 6:  Tap on  Languages and types
Step 7:  Tap on desired  Language
Step 8:  Choose desired  Keyboard Layout
  1. Open the Settings
  2. Tap on General management
  3. Tap on Language and input
  4. Tap on On-screen keyboard
  5. Tap on Samsung Keyboard
  6. Tap on Languages and types
  7. Tap on desired Language
  8. Choose desired Keyboard Layout

Samsung Instructions