Location and TimesNumbers 29:40 And Moses told the children of Israel according to all that the LORD commanded Moses.
It was God that prescribed the offerings that He wanted offered to Him in worship. It is God that has prescribed that Jesus be the only means of salvation.
There is no way that we decide how to please God and get our sins forgiven. Men aren’t allowed to get to God in their own way. There are not many ways to get salvation. It is God who makes that decision.
So you must get in line and do what He wants. His desire is that you realize that Jesus is the sacrifice. It is Jesus who died for us. It is the way that God has chosen to settle our sin debt. Trust Jesus.