BTCUSD : H4 reversal pattern on 50% fibonacci level

Trying a long position on BTCUSD with this confluence of elements, but only with half of my usual risk, as it could retrace more.
We have a :
- H4 RSI divergence
- inverted shoulder/head/shoulder validated by breakout of weekly pivot and currently retesting it
- it happens on 50% fibonacci retracement of big previous uptrend
snapshot

H4 chart :
snapshot
FibonacciHead and ShouldersOscillators

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