Issues with erections after using a cock ring…

So 6 months ago, I was definitely a little too rough with myself while wearing a cockring. For about 2 weeks after, I lost all my erections and had very weak morning erections.

Since then the situation has improved where I do get erections (morning natural and by stimulation).

However, however, 6 months on my erections just aren’t what they were…I feel like they are improving slowly…but then if I masturbate for an extended period of time it seems as though my penis ‘loses steam’, gets soft quicker than it used to if not physically touching it…

Has anyone else experience this? Or know anyone who has?