Seeking ways to strengthen my Imaan - please recommend resources

Assalamu Alaikum, I was born and raised Muslim, but I grew up without practicing role models around me. The religion I was shown felt very watered down and more cultural than spiritual. My family values education and science, and they’re Muslim, but our practice was limited. I went through a lot of trauma, and some of the people who hurt me were Muslims too. Seeing Muslims behave badly a lot made me resent the community (I know wrongdoing isn’t limited to Muslims, but living in a place where it’s common wore me down). Alhamdulillah, Allah has blessed me with intellect and critical thinking (Allahumma barik), but I used that curiosity in ways that led me to study anti-Islamic material and explore things that aren’t allowed. Deep inside, though, I always felt I’d return to Islam - and Alhamdulillah I did. I’m practicing again. Still, doubts keep creeping in. Thoughts like “what if there is no God?” (Nauzubillah) pop up, even though I don’t mean them. I need help reinforcing my conviction that Allah exists and that Prophet Muhammad, peace be upon him, is the final messenger. I’ve already started praying, joined a two-year beginners’ course that covers Islamic basics, and I’m learning Arabic with Arabic101. I also watch lectures by Assim Al-Hakeem. Alhamdulillah for these steps, but I want more ways to build my Imaan. Could you please suggest books, lectures, short readables, daily practices, or other resources that helped you or others stay firm in faith? Practical tips for dealing with intrusive doubts would be very appreciated too. Jazakum Allahu khairan for any recommendations.