You find a church you want to try that lines up with the doctrine that God has impressed upon your heart. Then you begin attending. Be careful not to have the expectation of changing them. Expect to see weaknesses. Is there is a spirit of love for souls and the desire to grow in Christ?
In time, seek some private time with the Pastor to get to know his heart and where he believes God is leading the assembly.
A church family is vitally important and therefore justifies a great amount of prayer. Know where the Lord is leading and don’t just settle because it is convenient.
“Praising God, and having favour with all the people. And the Lord added to the church daily such as should be saved” (Acts 2:47).
(A requested problem topic)