Salaam Alaikum, TashaN.
Do you consider yourself to be sincere? I believe you are, but you have a different opinion than the scholars regarding the ayat about Allah not putting two hearts into anyone's body. Either their understanding is correct and yours isn't, or vice versa. You said you believe it to be literal, they said they believe it to be figurative. Does your diffference in interpretation mean that one of you is insincere?Allah will give the true understanding to the sincere. It's not about being smart but about being humble and sincere then Allah will give us the understanding and increase our faith.
{124} وَإِذَا مَا أُنْزِلَتْ سُورَةٌ فَمِنْهُمْ مَنْ يَقُولُ أَيُّكُمْ زَادَتْهُ هَذِهِ إِيمَانًا فَأَمَّا الَّذِينَ آمَنُوا فَزَادَتْهُمْ إِيمَانًا وَهُمْ يَسْتَبْشِرُونَ
Whenever there cometh down a Sura, some of them say: "Which of you has had his faith increased by it?" Yea, those who believe, their faith is increased, and they do rejoice.
{125} وَأَمَّا الَّذِينَ فِي قُلُوبِهِمْ مَرَضٌ فَزَادَتْهُمْ رِجْسًا إِلَى رِجْسِهِمْ وَمَاتُوا وَهُمْ كَافِرُونَ
But those in whose hearts is a disease, it will add doubt to their doubt, and they will die in a state of Unbelief.
Quran (Surah 9)
If you read the entire Bible (NT and OT), you will see that in terms of violence, the NT supercedes the OT. Christians are told to follow the commands in the NT, the OT is a history of what we believe God once did.I don't know Christianity enough to judge whether it's a violent religion or not but from what i saw in the OT it seems like a very violent religion unless Christianity deleted the OT from the bible then that's another story.