A bit unsure about what to do with my faith

Assalamu alaikum! I’m posting this because, as the title says, I’m kind of confused about my faith-or, well, which faith I truly believe in. Let me give you some background first. I grew up Catholic and still go to church regularly, all because I love God. He’s the Almighty, the Most Powerful, and I can always turn to Him for help-He’s been there during the toughest times of my life. Serving Him and looking after this world He created for us is the most important reason to live, really. I’ve always had a deep respect for other religions. I took a religious studies course and did well in it. Islam, in particular, is a faith I respect enormously. Mostly because of how seriously Muslims take their faith and belief in God, and the charity and compassion it teaches are beautiful. Sadly, many Christians and Catholics have lost that spark and just wear the label, which breaks my heart. Since I took that course and love learning about religion in my spare time, I’ve read almost every holy book, including the Qur’an. And I adore the Qur’an-it’s a stunning piece of work, amazingly written, especially for its time and by a man who couldn’t read or write. Simply incredible. Lately, I’ve been feeling conflicted because I just don’t think Christianity or Catholicism fits me anymore. I especially struggle with believing in the Trinity. I can’t fully explain this feeling, but my heart tells me that Allah is the one true God and Islam is the truth. I just want to serve Allah-nothing more. It’s like a switch flipped in my mind. I want to love and serve Allah; I believe in Him. There’s just a tiny thing holding me back from moving from Christianity to Islam, though. I’m not even sure what it is. But I can say with confidence that I love Allah and want to serve Him. I think I just need a bit more understanding to take that next step. Jazakallah khair for reading.