Did you leave because the people were not christian in their behavior, or because their church demands it's members believe a different Gospel?
Initially, the former.
When I accepted Christ and became a Christian, I was convicted that I needed to get a Bible and start reading it and that I needed to start going to church again.
So the first place I went was where I was raised, the Catholic church. Then I visited an Evangelical church and alternated between the two for several months.
The more I read the Bible, the bigger discrepancy I saw between what it said and what the Catholic church taught. That settled it for me. I finally made the break.
Meanwhile, the reaction of the Catholics I worked with to that decision, some of whom were in my parish, confirmed my initial decision.