Churches are closing and the ranks of people who attend church are thinning, at least in the Western World. The Catholic Church is growing rapidly in African and in Asia, however. But those of us who live far away from these areas must persevere. When we encounter bully behavior at church, it puts our faith to the test. Because we're in the world, but not of the world, we try to remove ourselves into spiritual enclaves, only to find hardships there as well. But we still need to worship God regardless of what's going on.
Catholics are bound, under penalty of sin, to attend Mass on Sundays and Holy Days of Obligation, in keeping with the Commandment of observing the Sabbath. We also receive graces from the Holy Eucharist, which we believe is the Body and Blood of Christ. This is Biblical, recorded in the Gospel of Saint Chapter 6, which we call The Bread of Life Discourse. Jesus told us several times that we must eat His flesh and drink His blood or we will have no life within us.
If you are the target of a church bully, stay rooted in your faith and close to Christ. Above all, do not turn away from Him. Find a way to lose the bully. But keep your faith in the process.
For addition reading on malignant narcissism, please read my Female Bullies blog. Here is another article that discusses why narcissists like to join volunteer groups and organizations.