Good morning, Ambar;
The optimum, of course, is to have all of them; 35mm, 28mm, 24mm, 20mm, 16mm, 13mm, and on down to the circular image fisheyes.
However, I find that the need for very careful work hits me right at about 20mm. At 24mm and longer, I can pretty much do what I want with framing and composition. At 20mm, I start needing to recognize that really I am working with a wide angle lens, and I need to more carefully watch what happens to the lines as they cross the frame and where I position them in the frame. The 24mm lens is what I use most often now for interiors of rooms and it is the last lens where I feel comfortable just taking a photograph without worrying about "I am using a wide angle lens."
Below the "normal" lens, the 28mm is probably the most useful one. If I were limited to only one wide angle lens, it is the one I would also select. Have fun with your 28mm lens.
Enjoy; Ralph, Latte Land, Washington