Yes all we need to do is support cryptocurrency by promoting all altcoins and BTC for the growth of cryptocurrency like promoting on social media.
but before that you must first promote to those closest to you because it will make it easier for you to explain crypto especially if you have real evidence if crypto is very potential for the future and can be very profitable for investment so you will easily attract other people to join crypto.
that is the way that I have applied and the results are quite good.