I felt like more and more people became aware of the existence of Bitcoin this year but sadly, most of them just treat it as a "get rich quick" scheme instead of a long-term investment. The knowledge is the key here and people need to get more educated about BTC.
Because they fear the market will collapse like late 2017 and early 2018. Investors lost too much money during that time and now they are a lot more careful, in fact not who else invested long term in this market any longer? everyone will be willing to dump it all if they get a little bit of a profit, so in 2019 the market cannot go up too high because psychology of investors is scared.