Thank you for asking. I can understand your concern. In your case the Erections appears to be partial. It is possible and can be an indication of Erectile dysfunction. However, before concluding any problem, associated factors of masturbation history, pornography use, medical problems, stress, etc needs to be explored. A detailed history and information about these is required.
Next Steps
I would suggest you to consult with a sexologist to establish a condition.
Health Tips
With suitable medications and instructions, the problem can be cured.