How to manage performance & inferiority complex?

First of all I am feeling embarrassed asking this; it took me lot of courage asking this because I know people are going to laugh or make fun of it.

But I need some serious advice, if you can (sorry for my bad English)

So when I was 27/28; i realised I had extra foreskin which was causing me irritation & blood when it was fully errected. My penis length was around 5.3. And the width was around the size of two fingers.

I went to various doc & everyone recommended me to go for circumcision. During that time I used to have sex with my GF (now wife) and I usually lasted in around 15 min.

Post surgery: I feel the skin was too tight, so tight that one of the stich broke and I still have that marks. But I think because of that my penis size reduced to 4.1 inch and width became the size of three fingers. Initially I always felt like my penis increased more in width than length when I am excited. And now because I don't have foreskin (or may be other reason), I can no longer control sensitivity and I last in around 2 mins.no matter, how many techniques I tried like thinking other stuff, breath control, muscle control, diet, pressing shaft etc.

Despite me not being a "good in bed" guy, my GF got married to me and we are married for now 10 years. I feel so bad that I am not able to give the pleasure she deserve and that feeling kills me everytime. At the same time, she never complained about it and loved me like always.

I really want to improve, I am 40 now. So I have few questions, any suggestion is welcome because I want to do it for my love

- Did any of you faced the same issue? If yes, how did you managed?

- Now, my penis length is smaller. Will pumping help?

- other than tablets (because I tried viagra kind of tablet and it made me sweat & raised my heart beat) is there any way you can suggest where I can improve

And i am so embarrassed to say this, but any woman can answer on

- does size really matter? My wife never complained about me being 4.1 . As a matter of fact, it never went more than 2 min so I am not even sure about it. But yes, because I stroke slow she tells me to stroke hard but if I do then i cum in seconds instead of minutes.

- Is length is more important than width or vice versa?

- If you have any advice what women need along with sex (i do foreplay like licking her and kissing; if anything else you can recommend?

I am not sure if I am able to explain my problem well but again I would really appreciate any advice.