I have attended numerous Christian churches, like probably 30?
Only 2 were always open to me. Many were downright hostile for a variety of reasons, based on differences in doctrines, to personal relationships, to me being accused of causing church splits. Some even started being distant when I couldn’t afford to pay a tithe or offering and some church members were helping me out with small amounts of cash ($5 - $40 at a time) - I was accused of taking money away from the church! I hadn’t asked people for money, they offered and even told me God led them to do so to help… I was even banned from a church because a pastor who had never met me listened to a rumor and said i had spiritually destroyed a church ! None of it was true at all, as a legalistic conservative had actually destroyed a church by causing a major split and he hated me.
Depending on the reasons, if they give any I would either try to reconcile differences or hunt around for a new place to worship.
Although gossip and backbiting is frowned upon by the Bible, it is rampant in many churches and is probably a major cause for divisions and harm.