Missing my faith, how do I find it again?

Assalamu alaikum, this feels a bit strange to say but I’ve lost my iman. I was 15 when it started and now I’m almost 18. I used to be a Muslim, but then I came across some stuff online about Islam that really let me down. I looked into Christianity for a bit, but after that I just stopped believing in God altogether. I don’t want to stay this way. I miss my deen and it hurts when my family talks about Islam and I feel so disconnected. I really want to give it another try and learn more. It’s hard because I struggle to believe there’s a God, but deep down I truly want to. I recognize so many blessings in my life, and I want to thank the One who gave them to me, to show my gratitude. Please, if anyone has advice on how to change my perspective and come back, I’d be so grateful.