The market first created a double top which was found on the weekly chart confirming a sell. Second reason is that there is a strong zone that was founded on the daily chart that zone was respected multiple times. The middle zone played as resistance in 01 Sep 2020, was broken at 01 Dec 2020 and tested as a support at 04 Feb 2021 and after the brigade on 05 Mar 2021 the market retested on that very same zone twice to push down. The market is retesting on that zone now to push down again.
Comment:
The market is retesting on that zone as a flag