How to clean my 11 years old nose? I used tissues but usually I push all the left over nose shit back in which is harder for me to get rid. And my LO hate me digging his nose.. He will cry like I am abusing.him... any method I can try to make him feel comfortable?

I would stop the tissue and start teaching your child to blow their own nose. One way to do that is during bath time. This is a prime time to introduce the idea of what it feels like to blow air through their nose and how to do it on demand. Have your child put his nose just below the surface of the water and blow bubbles using only the nose.

Blowing out is a good option. Can try ear buds carefully with some vaseline gelly on