I used to have strong iman, but lately I've been struggling.

Assalamu alaikum, everyone. I wanted to share something I've been going through. About two or three years ago, I was really committed to my deen. I prayed my salah with full devotion and had a deep consciousness of Allah's presence. Then, I began studying various philosophies and getting deep into certain ideas, and it led me to question a lot of things. Over time, that feeling changed. Now, I find my salah sometimes feels more like a routine duty than a heartfelt connection. It's like my fear of committing sins and my concern for the spiritual consequences have faded, and I feel a bit lost. Has anyone else experienced a phase like this? How did you find your way back?