Well you're very welcome, I hope my advice has given you some help! Now onto your problems, severe phimosis isn't an easy condition from what I understand so perhaps you can talk to a doctor about that? Circumcision is in my opinion a rather barbaric ritual but for some people who do have excess foreskin it can be a valid medical procedure and if done correctly by professionals shouldn't do any lasting nerve-damage at all, in fact the only danger is from local/general anesthesia.
As for your depression, well I know how that feels as I went into a rather dark one after my last girlfriend dumped me. I really thought she could be the one for me and when she dumped me I honestly thought about ending my life. The worst of that depression is thankfully over but I am still determined to get professional help for both my addiction and my issues with depression as they are still there, bubbling under the surface. I hope that if you even think for 1 second that you might need help, seek it! After all, even Robin Williams succumbed to Depression in the end and he is one of the most beloved comedians of all time.
When it comes to "Deathgrip" PMO, even if you decide not to have surgery, stopping this practice will help you. No PMO means not only will you re-attune to the feeling of a partners touch, be it a handjob, blowjob or vaginal sex, but you will become naturally sensitive again and feel stimulation throughout your penis (At least according to many success stories!).
I would still recommend seeking the advice of a good doctor on the subject of your phimosis, it is after all a serious medical issue and something that can change your life.