30 FX pairs is a lot.
it doesn't mean the more FX pairs you trade, the more opportunities there will be.
Just focus on the major FX pairs
a decade ago, things were very different;
there were major currency wars.
you can literally trade with the eyes closed and yet still earn $$$.
Nowadays, even if you open your eyes extra-wide, it doesn't mean
you can earn $$$.
Nowadays FX moves just a little & Opportunities come rarely.
Factor in all these and also have an understanding of macro fundamentals.
Look at Brexit news.
When there was Brexit news, GBP was very tradable.
Now it is over.
I used to day trade major FX a decade ago.
Nowadays, I rarely trade major FX as there are other better things to trade.