to tell you mate, never to invest in something that you don't understand but the problem here
we are talking about bitcoin here that even me does not even know Bitcoin when I start investing in
this coin (but lucky that a cousin and a friend vouches for this so I decided to put my money inside)
sometimes we can trust something that we does not truly understand but some of our friends or relatives are already into it.
Whether it's Bitcoin or any other investment asset, you are not supposed to make your investment in it just because some people are vouching for it. The first thing you should do is to conduct your research and gather as much knowledge as possible about the asset you are going to make your investment in so that you understand what you are getting into. Understandably, Bitcoin is very popular and everyone would say it is the best investment asset, regardless, any investor should know enough about it before they get into it.
The knowledge that you gather will be useful for you to understand Bitcoin more closely, it will save you from things such as panic selling, becoming a victim of FUD, and selling before your target or goal out of fear that you might lose your money.
So, make sure that you make your investments only after you do your due diligence and your investment decisions shouldn't be influenced by vouches.