Feeling nervous, dizzy, and tense in buses or crowded places is often related to anxiety or panic-like symptoms, which are common and manageable. You can try simple techniques such as slow deep breathing, focusing on your surroundings, and gradually exposing yourself to such situations for short periods to build confidence. Make sure you are well-rested, eat regularly, stay hydrated, and avoid excess caffeine. If needed, you can talk to a doctor about counselling or therapies like Cognitive Behavioural Therapy, which are very effective in managing anxiety. If symptoms are severe or frequent, a doctor may also suggest medicines, but these should only be taken under guidance. With the right approach and support, this condition can be well controlled.