English has a very commonly used vowel that doesn’t exist in Indic languages natively.
It is ɛ- Open-mid front unrounded vowel.
Consider the word bet, its vowel sound is halfway between bat/बैत़ and bait/बेत़.
This vowel is fairly common in English, for example, tech whose vowel sound is halfway between tack and take.
Or met which is half-way between mat and mate.
Now, this sound is not natively written in Hindi.
However, this does show up in various spoken words like रहना, कहना, and सहन.
And the native speakers intuitively know that the pronunciations deviate from the written spelling in these cases.
A better way might be to use a different symbol(ॆ) to represent this vowel, for example, bat/बैत़ -> bet/बॆत़ -> bait/बेत़.