Sorry, you must first tell me where God authorized a change in practice from the biblical requirements of Lev. 23 to the ersatz forms of today? When you can do that then we can proceed. Otherwise I don't need to respond. I just need to point out that you are in direct violation of Deut. 12:32, "Whatever I command you, be careful to observe it; you shall not add to it nor take away from it.".
Can't do much for you friend. If you don't accept the book of Hebrews and the testimony of Paul as authoritative then nothing I can say will convince you otherwise.