Because most of my friends believe that BTC reached 100,000 US dollars in December, so I want to discuss whether this is true

You already has your answer mate , we are more than a week before December ends and yet what we have now?
For me i will answer you frankly , NO WE WILL NOT MAKE IT TO 100k this year.
and even if next year i doubt this will happen that is also why i will keep my holdings for more years and will never expect high this year and the next.