I lost my $2,000 deposit after trusting a fellow Muslim - how should I view this from an Islamic perspective?

Assalamu alaikum, everyone. I recently moved to Canada as a young immigrant and rented a place from a Muslim brother. Since we shared the apartment, I got to know him personally and trusted him deeply. I opened up about my struggles as a newcomer, my financial hardships, and the challenges of starting over. When I moved out, I made sure to clean the place, remove all my things, and leave it in good condition. But when I asked for my $2,000 security deposit back, he refused and accused me of stealing, damaging property, and owing unpaid charges. The hardest part is feeling helpless. We had no written agreement because I trusted him, and I lack evidence to realistically take legal action. The cost, stress, and lack of proof make it seem impossible to get my money back. What stings the most is that he seemed so religious - he prayed five times a day and ate halal - so I never expected this. He also occasionally smoked weed, which added to my confusion about his actions. From an Islamic perspective, how should a Muslim deal with being wronged when justice through worldly means feels out of reach? What does our deen teach about trusting Allah, forgiving others, and handling someone who has taken your rights? Jazakum Allahu khayran for any advice.