The vowel letter e is a weak vowel in the monosyllabic suffix, and the first syllable/? /sound, when pronounced, the tip of the tongue touches the gum, the front of the tongue is slightly close to the hard palate, and the lips are slightly prominent and rounded. The round lip is the key, and the round lip is in a natural state without much effort. This sound only appears in unstressed syllables, so you don't need to pronounce it too hard. For example:
Enjoy this, that (definite article), he (objective)
Excellent (with case or objective case)
Singing about herself, herself (reflexive pronoun)
small
Get off standing.
Ceci, here.
Winnie, come here.
Sowing in summer
I hope it can help you solve the problem.