Shabbat Shalom to all Sabbath keepers ! From dusk Friday until dusk on Saturday is the Biblical Sabbath - not Sunday. May I respectfully suggest a website created by a man I believe Elohim had me cross paths with during my frustrations of trying to find Biblical truth and not finding it in any mainstream churches - their “dogma” not aligning with what Scripture actually says in many areas.
everlastingkingdom.info is the site - see if it doesn’t resonate as truth in your spirit
Shalom 
Scripture says “The Spirit will guide you to truth” - not some pastor.
Pray to God in sincerity and reverence, and acknowledge before Him that you don’t know the truth - and so you’re standing in faith on His Word - His promise - that The Spirit - His Holy Spirit - will guide you to truth - be open to His leading ......
Shalom