There is actually nothing in the Bible telling you to go to a Church on Sunday or on any other day. The word "Church", in the Bible, is actually a Greek word translated from Ekklesia. Ekklesia simply means a gathering of believers at any time and any place. The real "Church"is the believers, not a building with a cross on top. You might want to research about when the Sabbath is, some day, too and what the Bible actually says about how to keep it holy.
Well, I will tell you in part. The Bible tells us to rest on the Sabbath. Now police officers, nurses and so on need to work, but it is okay to save others on the Sabbath. The Bible tells us not to have servants work for us on the Sabbath, but to let them rest. Think waitresses, shopkeepers and so on.
We are even to let our animals rest then, and to not keep them penned up. We are to prepare our meals in advance. Now some will say "That's the Old Testament, things are different now." Are they? Can we now murder, steal, commit adultery and so on?
We are told to keep the day holy, devoted to the Lord, in Isaiah. So there goes Netflix and other secular entertainment. We are told, also in Isaiah, not to buy and sell on that day.
The Bible says the Lord "will not alter what goes out of His mouth." If that is not true, why believe any of the Bible? At Mt. Sinai, to the ears of the terrified Israelites below, He audibly spoke the 10 Commandments. He has called them "everlasting" and "for all generations" and not just them.
If you are getting help and fellowship in one or a dozen Churches, at one time or multiple times, that is your choice.