Being tired on a rainy night is a sad and desperate thing. So I think using a black and empty street as a background can show the emotions of the character. The man in the image is looking down and holding no umbrella. This also implies that he is very tired. Even though it is raining outside, his tiredness stops him from opening an umbrella.   Picture: https://miro.medium.com/v2/resize:fit:1400/1*J_HcVqIS0foSvZOi6GItmQ.jpeg / https://medium.com/@amirasofi21/a-man-standing-in-the-rain-at-night-a-picture-by-matt-stewart-shutterstock-digital-art-79643b9602b6 Cheung Chun Yu 3036228385

To show the feeling of being alone , i think the best is that the character itself need to stay in a empty street and sit alone to look though the empty road. Using the back instead of character face, i think it can show that the character is tired in something, the more better way is that their can have some smoke came out from character first picture:https://zh.pngtree.com/freebackground/man-is-holding-an-umbrella-while-the-rain-falls_2652338.html second picture: poe.com(AI photo )   CHAN CHUN PONG 3036267135