With only a few hours, it is better to explore one area instead of crossing the city. Central Bangalore can work well for a relaxed evening, especially if you want a mix of a park, local food, and cultural places. Areas such as Church Street, MG Road, and nearby parts of central Bangalore can also suit an evening walk, food stop, or casual shopping.
If you prefer a quieter plan, choose a nearby park or cultural place first, then finish with a local meal or coffee. You can also explore a market if you enjoy shopping and local street life.
Before leaving, check the route and allow extra time for traffic. Pick two or three activities at most and keep some free time between them. A short evening is more enjoyable when you explore one area slowly instead of trying to visit many distant places.