"Invest only what you are afford to loose."
This was the first advice I had got from my teacher and will tell the same thing to everyone whose trying to start trading in any manner.
Go with your instincts. Logic is not perfect.
From your submission above you strongly believe that what ever trade you place you have a mind that you will lose your trade. If truly that if what you were thought and you believe it then you are trading like playing gambling.
And you should stop go and find other investment since you are not confident with what you are doing. Though, the message is right invest the amount that you can afford to lose and forget so in case you mistakenly choose your position and things didn't materialize you can easily go and find another to try your luck once again.
This tricks is recommendation by every experienced traders for beginners because money management and risk management must be follow in trading does not matter beginners and professional traders. Crypto mentor is needed but not necessarily to someone physically helped you, specially for your supports youtube,blogs,books.