pronunciation - Is the "ng" sound often pronounced simultaneously with the "n" sound?

Don't native speakers in some regions pronounce [ŋ] simultaneously with the [n] sound in order to connect it without releasing the "g"?

For instance, can the word "singer" instead of sɪŋ·ər, be pronounced more like sɪŋn·ər?

I'm asking because every time I try to pronounce that word, the "g" sound is released automatically, even though it's very slight, and the only way to avoid it is adding the "n" sound.

My native language is Russian.

Answer

Firstly, native English speakers do not add an extra n after the /ŋ/ in the word singer, though some do have the same issue as you with having difficulty producing /ŋ/ in the middle of words like singer and singing.

The "ng" sound in medial and final word position can be challenging for native Russian speakers. What's happening is that /ŋ/ is a continuant sound, and if you release the tongue from the sealed position for the /ŋ/ while you are still producing airflow, you will make a /g/ or /k/ sound because the release of the built-up air produces the sound.

The way to avoid this problem is to begin to shape the vowel for the "-er" before releasing the /ŋ/ tongue position, and to release the tongue gently into the vowel. If no air is allowed to build up, the plosive/stop g sound will not be produced.

You can hear the pronunciation of singer in this video: https://youtu.be/c-3HtmE5muY
and get more information about the /ŋ/ phoneme in American English in this video: https://youtu.be/-DZ5GICTHVU

I will be making a more specific video to help with words with "-nger" and "-inging" in the future, as I have heard from many Russian and other non-native speakers that these are particularly difficult to make without the "g" sound intruding. I'll add it to this post as an edit when it's complete.