the other elephant in the room is:
how could the whole Apostolic Church believe Jesus rose on the first day of the week, if He rose on the sabbath day? the early Church Fathers are unanimous that Christians gathered to hear the reading of the Scriptures and celebrate the Eucharist on the first day of the week, because it’s the day Jesus rose from the dead. this was hundreds of years before Constantine was even born!
My only suggestion is to continue to research the subject until all shadows of doubt are vanquished by the light of your new understanding/knowledge.
>> “how could the whole Apostolic Church believe Jesus rose on the first day of the week, if He rose on the sabbath day?” <
First, there is no “Apostolic” church.
The RCC is chock full of biblically illiterate unbelievers that believe all the satanic unscriptural crud that the RCC purveys.
They’ll believe almost anything, they never bother to think anything out.
The Bible shows that there was a High day, and a regular day, and then the Sabbath. The astronomical calendar proves that there were no years at that time when the Passover could have coincided with a regular Sabbath, so your house of card theology has fallen to the trash bin.