Dear Sir
There are several conditions that can be the cause of your pain.
Kindly find my channel
Desai Shoulders
on YouTube
This will help you understand shoulder problems.
Link in the description
Next Steps
Detailed clinical examination by an orthopedic surgeon shoulder specialist
Health Tips
https://youtu.be/JzWbxt2Rsuc
https://youtu.be/4ApkayP1GRY
https://youtu.be/7I9EIz50Ys0