Autocorrect automatically replaces misspelled words on the LG smartphone with the correct word and is enabled by default. In the LG keyboard setting, Autocorrect can also be turned off.

Don't confuse autocorrection with spell checking: if the autocorrection automatically replaces the wrong word, the spell checker just highlights it in red.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  General
Step 3:  Tap on  Language & keyboard
Step 4:  Tap on  On-screen keyboard
Step 5:  Tap on  LG Keyboard
Step 6:  Tap on  Auto-correction
Step 7:  Tap on desired  Language
Step 8:  Choose between  off ,  Mild  and  Aggresive
  1. Open the Settings
  2. Tap on General
  3. Tap on Language & keyboard
  4. Tap on On-screen keyboard
  5. Tap on LG Keyboard
  6. Tap on Auto-correction
  7. Tap on desired Language
  8. Choose between offMild and Aggresive

LG Instructions