There can be multiple causes
It can be due to voice abuse (due to the habit of shouting) which can damage vocal cords
It can be due to acid regurgitation to throat and subsequent LPR
It can be due to chronic coughing, or the habit of smoking
Next Steps
consult an ENT specialist and get your laryngeal examination done if needed
Health Tips
please dont go for home remedies as it can waste your time and worsen the condition