Asking for Guidance: I Suspect My Husband Was Unfaithful

Assalamu alaikum, My husband and I have been married for almost two years. During a difficult period in our marriage he started going to an unfamiliar place and turned off his phone location. When I confronted him about possible infidelity he denied it and asked for a week of space. He told me it was a relative’s home, but the details didn’t add up. I looked up the address and none of his family lived there, I checked messages with that relative and they hadn’t spoken in months, his location stayed off, and there were no calls between them. I made du'a to get through that phase and asked him to stop sharing his location and to be more open, and he convinced me he hadn’t done anything wrong. After that things actually improved - our relationship got healthier and he stopped visiting that place. Still, five months later I can’t shake the fear that something happened. I’m unsure how to approach this from an Islamic perspective. I want to trust him and avoid suspicion, but I also fear it could recur if we hit another rough patch. I feel like I need clear, tangible evidence to find peace, but I can’t find any. Have any sisters (or brothers) been in a similar situation? How did you handle it within the framework of faith - balancing the presumption of innocence, the prohibition of unfounded suspicion, and the need to protect your heart and marriage? Any practical steps or duas you found helpful would mean a lot.