Something precious was taken from me and my father

Assalamu alaikum, everyone. I'm feeling really down and need to share what happened. Yesterday, someone broke into our storage and stole my bike-the one I rely on to get to work. Since it was locked together with my father's bike, they took his too. A few days before, a young brother from the community bumped into me there and asked casual questions about the bike. I thought well of him, as we should, and didn't imagine he might be checking it out. Now I suspect he could have been involved. I'm sad, but mostly I feel heavy with guilt because my parents spent so much effort helping me search, and we found nothing. Only my bike was targeted, but my father's was taken just because they were attached. It also makes me worry about our safety-if someone can get in that easily. I'm not sure how to react. Should I forgive the thieves? Is there a specific dua or surah I can recite for this? I feel so lost and upset. Any advice would mean a lot, inshaAllah.