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
It is very natural to make mistakes actually, even not here on crypto, even in life. Through those mistakes, we learn and as we learn, we get better. There will be instances where we will find something to blame whenever we make mistakes but that shouldn't be the case, we should not focus on what may have caused us to fail, we should focus on how we will succeed the next time we experience the same thing. Be smart and wise always with your decisions so that you can avoid committing a mistake or if not, just use it as a weapon to beat the odds in the future.