Christians, do you believe that Jesus was the "final and ultimate sacrifice" replacing the sacrificial system?

I believe that Jesus Christ was the final, perfect, and eternal sacrifice, because Jesus Christ is sinless and eternal/infinite. I believe that the sacrifice of Acts 21:26 is the Holy Eucharist, in which the same sacrifice of Christ at calvary is presented, just as Christ commanded his followers..."do this in Memory of me...." God bless.