Masturbation Habit, Been Stressed, Ejaculation Issues. Can Diet Be A Cause?

Hi, I am 29yrs old male, I have been actively participate in Self satisfaction(masturbation) since many years. It has no problem with me earlier but recently i found out that my activities as increased like 2 or 3 times per day and i am ejaculating very low amount and since week i couldn't get hard as earlier and since 3 days i couldn't ejaculate either. I couldn't understand the situation and i am very worried about my sexual health some times i feel like is this the end of my sexual chapter in my life. Please give me feedback on it.

I searched about the causes and found out the diet, stress level can reduce performance. But my diet is ok and stress level yes there is stress level because i am looking for job since 10 months, so there will be a stress level. to avoid that stress i addicted to porn since last 2 months bcz its giving me pleasure. 3 days ago i feel really embarrassed bcz i couldn't perform well(No hard & no ejaculation) with my casual partner.

I feel like am i turning into impotent!!!..

I am worrying too much about my sexual health. Please help me in this...

Thank you