(Question) Hair loss and scalp dandruff

As I get older, it seems unavoidable to experience hair loss. Strands are falling out one or two at a time, and now I am losing so much that I can't even count. Besides hair loss, I also don't know what to do about scalp dandruff. When I wear dark clothes, dandruff shows on top of them...

I even feel disgusted with myself... I wonder how others feel... I'm really at a loss about what to do. If anyone has experienced improvements with hair loss and scalp flaking, I would appreciate it if you could share your tips.