The general settings of the Samsung device can be reset to factory settings, changing settings such as ringtone, vibration, keyboard, languages, etc. Personal data or apps, as well as their contents, remain unaffected by this measure. The following settings are reset:

Android 10 (One UI 2.0)
Step 1:  Open the  Settings
Step 2:  Tap on  General management
Step 3:  Tap on  Reset
Step 4:  Tap on  Reset settings
Step 5:  Tap on  Reset settings
Step 6:  Confirm with  Reset
  1. Open the Settings
  2. Tap on General management
  3. Tap on Reset
  4. Tap on Reset settings
  5. Tap on Reset settings
  6. Confirm with Reset

Samsung Instructions