In the crypto market, there are many trading pairs. After trading only two pairs for a year, I discovered that it is good to focus on a few pairs. Why? It has allowed me to master those two pairs and understand how they really move. It has also taught me patience because when your favorite setup does not appear, you can avoid entering a trade. Remember, jack of all trades, master of none.
What is your opinion about this?
You are absolutely right.
And another way to explain this is, take your complete 10 fingers and put them all in your mouth at once, if you are comfortable having them all in your mouth, then it's completely OK to trade multiple pairs in the market, so long the money is large enough to divide into those several pairs.
But if having your 10 fingers in your mouth makes you uncomfortable, then I understand that so also will trading multiple pairs at the same time make you uncomfortable, and may possibly lead to loses, because keeping up with all the pairs that a position has been open on can be really challenging.
So yeah, for comfort, and to better understand the market so as to win more trades, it's absolutely good for the trader to focus on just a few pairs, or even one pair only, as long as the choosen pair has enough liquidity and volatility.