Your symptoms suggest a combination of sexual difficulties along with general weakness and possible nervous system or muscle-related issues. Premature ejaculation and difficulty maintaining an erection may occur due to stress, anxiety, low confidence, hormonal imbalance, or physical causes such as poor fitness, diabetes, or thyroid problems. Constant weakness and trembling of the hands may also point towards low energy levels, vitamin deficiencies, anxiety, or an underlying medical condition that needs evaluation. The cracking sound in the legs is often related to joint movement and is commonly seen in people with low muscle strength or early joint wear. Instead of starting any homoeopathic medicine on your own, it is important to consult a doctor for a proper assessment to identify the exact cause. Treatment depends on the underlying issue and may include lifestyle changes, stress management, exercise, behavioural therapies, and medicines to delay ejaculation, such as sertraline or dapoxetine, if needed. Eating a balanced diet, improving sleep, avoiding smoking and alcohol, and engaging in regular physical activity can also help improve overall strength and sexual performance.