I use H4 and Daily to establish the basic trend direction, and 15 minute for entries. I try to enter trends in favour of the H4 and Daily’s direction only, and consider a counter-trend trade only if the longer TFs are seriously overbought/sold, in extreme ATR territory and the M15 shows a clear reversal underway.
If the trendsignal is crossing over and under & failing to stay one side of the candles, that simply means there is no trend and you can’t trade it - not using a trend following system anyway. Your only choices are to sit out and wait for trending to resume, or chance your arm at the M5 where shorter intra-day trends might occur if the sideways range is big enough.
On the H4 though AU has been quite easy to follow over the last month or two …
I didn’t mention it on the chart, but you can see the long pullback entry recently just as the trend signal caught up to the candles. It finished with the doomed spike up to 1.035, then the smackdown which saw the signal line cross over. At that point you could have entered short immediately & done very well from it, and right now its pulling back for what may be a short entry point (can’t tell until it starts turning down again - don’t enter while its still wanting to rise).