The way you have written your question in English show that you are good at it. But you you want to be a speaker. Also you want confidence. Well, this may not be a language skill but the hard work may give you enough confidence for you. Practice it daily, spend time, spend some money too. Read out loud. These days, there are many resources to help you out. Have patience too.
You need to look at planet Rahu for a foreign language skills and also Mercury for language skills.
And strength of your 2nd house – its lord and the aspects it’s receiving are important.
Strength of Mars can be verified for gaining confidence. Also, for lagna lord.
Note: When you say face confidentially, it means secretly. If you say confidently, then only, it will mean what you want to mean.