You have to believe in the trinity to be a Christian. Regardless you aren't going to find any group of people who are perfect. Christianity is all about how people are sinful and must commit daily to emulating Christ even though they will continuously fail. Regardless it sounds like you are opening yourself up for massive disappointment by casting such a wide net. There are many "Christian churches" which are just jokes if not outright scams. Christians can't control who calls themselves a Christian. I encourage you to investigate the Eastern Orthodox church which has a rich tradition and clear direction for how the Orthodox should live their lives. It is Ancient Christianity that holds in high esteem prayer, fasting and alms giving. There is real spiritual meat on the bone.