Didn’t get interview from my dream program

Very confused. My dream IM program has finished sending interview invites and I didn’t receive one. This program ranks within #21-30. But I have received invites from two top 10 programs, and two programs that rank within #11-20. I’m just confused how I received interviews from higher ranked, more competitive programs, but not from my dream program which I assumed to be the least competitive among my reach schools. I absolutely love the ideals and curriculum of the program and so much wanted to match with them. But anyway, I’m grateful for the interviews I have received so far tho.