Learn Khmer (cambodian) -

Unlike Thai, Vietnamese, or Mandarin, Khmer is NOT a tonal language . You don't have to worry about the pitch of your voice changing the entire meaning of a word.

Reaching an advanced level where you can discuss complex ideas typically takes 1 to 2 years of consistent practice. Top Ways to Learn Learn Khmer (Cambodian)

If you are physically in Cambodia, immersion is your best friend. Unlike Thai, Vietnamese, or Mandarin, Khmer is NOT

The script is beautiful but complex. It has 33 consonants and 24 vowels (plus additional "personal" vowels), which can be daunting for beginners. Learn Khmer (Cambodian)

Because Khmer isn't on mainstream apps like Duolingo, you’ll need to look at more specialized resources: 1. Language Schools & Study Groups