>>>The phonetic sound of ‘en’ and ‘em’ is a nasal ‘n’ (the phonetic character – I don’t know how to put here - is letter ‘a’ with squiggly line over it).
>>>So, the sound should be the same – nasal ‘n’. But this ‘m’ is confusing me a lot and I tend to add the sound of ‘m’ right after the nasal ‘n’.
>>>Is this correct that 'm' is pronounced lightly or should I just train my eyes to ignore the letter ‘m’?
>>>
>>>TIA
>>
>>It depends on the word you are talking about.
>
>Ok. This makes it even harder. For example, the word that you have helped to understand, "embêtant". Do you pronounce the 'm' in it on not?
>Thank you.

No, you do not. There is no emphasis on the 'm'. Although there maybe a difference between French Canadian prononciation vs say a person from Marseille (France).
For Canadians it is more like the second sound byte on this site https://www.howtopronounce.com/french/embetant/

If you know how to pronounce year in French (An) it is about the same.