Sometimes. But think before talking is the techinic!

fear of making mistakes，fear of not being understood，fear of doing sth you are not good at.

I don't know but Speaking foreign language is really challenging specially when you have to present for more than five minutes without stop. I am shy person so If I made a mistake in any word I feel a shame and that effect the whole conversation/presentation. In the worst Scenario my tone will become not normal then every thing goes wrong. Actually, that happened two months ago to me but I did another presentation later(after one month) and I got A+ in that presentation because I worked really hard for it 🙏💪🏻