Struggling to express my faith during a religious chat

As-salamu alaykum everyone, I had a situation today at work where I was paired with a new colleague who's deeply committed to his Christian faith. When I mentioned I was stepping away to pray, he asked if I was religious, and I said yes. That sparked a conversation about our beliefs on our way to the next task. He was really prepared, quoting Bible verses from memory, while I stumbled-like when he asked for the meaning of Surah Al-Fatiha, which I recite daily in prayers, but I couldn't translate it smoothly without checking. We also talked about Prophet Isa (peace be upon him), and I fumbled explaining our belief that he wasn't buried but saved by Allah. I ended up feeling like I didn't represent Islam properly and maybe don't know my religion as well as I thought. Just needed to share this because I feel pretty down about not being able to speak about my faith clearly, even though I try my best to live by it. It's left me with a bit of guilt and shame over how the conversation went.