The biggest factor that makes crypto difficult to grow is the number of scam projects, hack cases and so on, it's too easy to make coins or tokens is something that makes anyone easy to make crypto to be a scammer.
You can find a million reasons for people to distrust the market, first you cannot guarantee anything in this market, hack and other misuse is one factor but the majority of the players are waiting for the regulation from major countries and if we see some proper regulation then we might see huge investment in the market and into bitcoin, i am not expecting all the dead projects will get their boost but the bitcoin market will and can attract investors.
If you have accepted to participate in this market, you should be familiar with those risks because it often happens unexpectedly and unpredictably. I think the most important thing when participating is profit because if you can not make a good profit in this market, you are a failed investor. There are many different reasons but if you lose faith in this market, any investment will make you nervous.
I personally always have a lot of investment plans and all my plans are for profit so I always believe in this market. Not always lucky in investing because the big fluctuations always make me face a lot of difficulties.