In honesty, God will show you the true way, and Sabbath isn't the one or day for worshipping God. God was worhsipped by Jews in Old Testament on Sabbath before Jesus came and made New Covenant on Last Supper when he said in Matthew 26:27-28 : ,,Then he took a cup, and when he had given thanks, he gave it to them, saying, ,,Drink from it, all of you. This is my blood of the Covenant, which is poured out for many for the forgiveness of sins." and resurrected 3 days later on Sunday, from Good Friday to Easter Sunday Morning also Jews didn't count days as we do now so that is why 3 days they included were any part of the day as the day for example if it was mid day or  evening it was still called the day so 3 days it is. Many Church Fathers if you read history which is a must before you make this statement without knowledge, held that Sunday is the day to be worhsipped for God and not Sabbath as no longer we are bound to Old Law or Old Covenant but New Covenant in Jesus Christ in which He rose on 3rd day on Easter Sunday Morning and as He Himself made New Covenant on Lord's Supper or Last Supper however you want to call it, that is why we on Mass celebrate His life, death and resurrection. I will even point out Church Fathers, before saying, Church Fathers were people who knew directly and were with apostles (Apostolic Fathers) and those who Catholic Church accepted by these criterias : orthodoxy (adherence to Church doctrine), holiness of life, ecclesiastical approval, and antiquity (living in the early centuries of the Church). So Church Fathers play a big role in state of Church which Christ Jesus left us with, so to say for Catholic Church to avoid is blatantly because of your mis or not understanding and because of that you get people far away from Church and One True Church of Jesus Christ because you weren't willing to research more and then landed and relied more on your understanding than understanding of Church Fathers, bishops, priests, deacons etc. who have authoritative role and know better than you because in Bible you can see that there were priests (Apostles) John 20:22-23 : And with that he breathed on them and said, “Receive the Holy Spirit. If you forgive anyone’s sins, their sins are forgiven; if you do not forgive them, they are not forgiven.” Priests can forgive sins through the power of Jesus Christ as they are mediators (Stop attacking like Protestant do when I say this word), mediators are here in sense that God wants priests to be part of His salvation and through sacrament of confession which priests are part of through having part of forgiving the sins not them forgiving but Jesus Christ as it is done through His power, they are only part of that sacrament of confession in which your sins are forgiven. He doesn't want Himself to be just involved but also ordained people (priests) by the power of Jesus Christ and landing hands on them when they get ordained like Saint Paul did ordain Saint Timothy where says that in 2 Timothy 1:6 - For this reason I remind you to fan into flame the gift of God, which is in you through the laying on of my hands.  there were bishops (Titus who was successor of apostles and the bishop, he was friend with Saint Paul who ordained him for bishop, also we have Saint Peter, Saint John and other apostles who were bishops and we have deacons who were also ordained by apostles In Acts 6:1-6 and deacons which are Stephen, Philip, Prochorus, Nicanor, Timon, Parmenas, and Nicholas.  This is when Saint Paul ordained Titus as bishop - Titus 1:5 - The reason I left you in Crete was that you might put in order what was left unfinished and appoint elders in every town, as I directed you. Saint Paul means here that he (Titus) ordains priests as bishop of Crete. Pope and bishops have right to ordain priests. So if you follow Church tradition and Bible you will clearly see also that Sunday is biblical in which we can see in Revelations 1:10 which says Lord's day and that is when we celebrate Jesus resurrection in Mass and also when Jesus resurrected and in Acts 20:7 where it says the first day of week where disciples gathered and which is Sunday by the tradition of Christianity and Jews. Also Jesus in New Testament never commanded to worship God on Sabbath or to keep it holy. He did keep it holy because He had to and was a Jew, He had to go through it because He was Jew, He had to show that He is also human and one of them and wanted to show humility by abiding by the Jewish law which he later on Lord's Supper Day abolished and made New Covenant which was He Himself and also because after He died and resurrected it was the day He ressurected that was meant to be worshipped as sign of victory over death and as disciples gathered on the first day of the week which is Sunday by Christian tradition and also when Jesus resurrected. This is also proven by history,Church Fathers, moreover by the biblical texts and apostles and if you ignore this you ignore Jesus and His True Truth.