My Dear Wormwood,
You mentioned casually in your last letter that the patient has continued to attend one church, and one only, since he was converted, and that he is not wholly pleased with it. May I ask what you are about? Why have I no report on the causes of his fidelity to the parish church? Do you realize that unless it is due to indifference it is a very bad thing? Surely you know that if a man can't be cured of churchgoing, the next best thing is to send him all over the neighborhood looking for the church that 'suits' him until he becomes a taster or connoisseur of churches. - C.S. Lewis, The Screwtape Letters
Focus on the church God has placed you in, get to work in building His kingdom from there.
Bringing our effort into a collective focus brings heat; anything else is a division of sight, cold blindness, or at best lukewarm spew.