I have not seen a trader that do not lose sometimes, i may be new to the forum but been learning before now. it has nothing to do with sentiments but traders have to learn to accept trades the way it is, without attributing loss to any factors; as it leads to more rekts.
Always accept the market as it is without blaming any factors.
Always dyor too
You are right, if you always blame external factors in your failures, you will not be able to see the real problem that leads you to a loss when trading cryptocurrency. If you have lost trading cryptocurrency, you need to study this situation in more detail and see the root of the problem. It makes no sense to blame the market or the information that you receive, it is you who make the decision in this or that case. I also learn to trade in cryptocurrency and there were times when I made mistakes, but I knew for sure that it was me who was to blame, since at some point I was weak and succumbed to external factors.