The language on the Samsung device is already selected and set during the device setup. The language can also be changed to another one at any time afterwards. As is usual with Android, almost all languages are available for selection.

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  Language
Step 5:  Tap on  Add language
Step 6:  Choose desired  Language
Step 7:  Choose desired  Region
Step 8:  Tap on  Set as default
  1. Open the Settings
  2. Tap on General management
  3. Tap on Language and input
  4. Tap on Language
  5. Tap on Add language
  6. Choose desired Language
  7. Choose desired Region
  8. Tap on Set as default

Samsung Instructions