Erectile Dysfunction, Reduced Erection F

I am 27 years old and I have been masturbating regularly since around the age of 15–16. For the past approximately 2 years, I have noticed that my erections during masturbation are not as firm as they used to be, usually around 60–70% firmness. I also feel that my penis has become smaller compared with how it used to be, especially when it is not fully erect. I am concerned whether this perceived reduction in size could be related to my erection quality or another underlying condition. I have had sexual partners in the past, but I remained a virgin mainly because I was anxious about my penis size and worried that I would not be able to perform. Recently, I tried having penetrative sex with my partner on three different occasions, but I was unable to maintain a sufficiently firm erection for penetration. During sexual activity, I sometimes get an erection, and I can also get erections from sexual tho