It’s a thing in these markets in particular that they tend to move at the same time: either none are moving dramatically at a certain point in time, or all are. Not in the same directions obviously, but periods of “consolidation” if that’s what they are often affect the entire range of currency pairs, plus gold, oil and even US stock market indices.
I assume this is because they’re all affected by the same fundamentals.
So, it would be high risk to seek out the one unique forex pair which is moving, when all the other pairs including especially the other pairs including these two currencies, are trundling sideways.
Honestly not with XAU/USD nor with EUR/USD. I’m just not anxious to trade them.
It’s always the GBP/JPY chart that makes me itchy. I can’t look at it for long, even when prices are ranging for the longest time, without reaching for the antihistamines. And even occasionally for the sedative tranquilizers.
And as for the Nasdaq index … … … well, let’s not even go there …
I don’t think it’s just FOMO, more a mixture of FOMO and impatience.
This is an issue to be worked through, decided and resolved during the research and development of your system, rather than later while trading it live.