Like trying to catch too many things at a time or focusing on too many things at the time can make it difficult to catch one so also does trading so many pairs makes it difficult to understand anyone in particular when you are a new trader. The traders who trade many trading pairs, did not always start off trading like that, some of them focused on one or two trading pairs for a very long time before trying out others. If you are planning as a trader to trade multiple pairs you have to start somewhere and that starting somewhere means you have to start from trading one pair first before adding other pairs to trade.