please help me
anyone can share the problems in this site "dreamflower.in"suddenly we lost ranking in position, last one year it is in first
Hard to understand it quickly. As I see on the surface you have backlinks count falling last year. But not sure this is the only reason.
In case the competitors have backlinks growing your site looks worser for Search Engines. Try to analyse it this way. You are to make manually or to order deep analyses for the website and niche competition.
P.S. dreamflower.in is good domain, further work can bring very nice results