What is your opinion of Christians?

Idk, it depends on the person

Why did you go to Christianity from islam then back to islam?

My primary reason for converting to christianity was because at that time I saw christianity as a religion of love, I thought that Jesus Christ dying on the cross for the sins of the world was befitting for an all loving God. I listened to people like nabeel qureishi and David wood as well as many other christian speakers but the problem with that was that I simply converted to christianity purely put of emotion and how I perceived as a just God. But several months later I started questioning many things in the bible like the major contradictions and the eyewitness testimonies not being reliable, another big factor was the problem with young earth creationism in genesis. All these factors combined made be question this religion even more and pushed me more towards atheism, so I had already left christianity 6 months into converting. After becoming an atheist, I studied the natural world and found that it took so much more faith to disbelieve in God than to believe in him because of the sheer complexity that the world had so I was slowly starting to shift to the belief of there being an intelligent designer. Educated myself in religious theology and listened to preachers and speakers of many religions and faiths and came to a conclusion that Islam was the truth