I am sorry for your loss.
I think a psychiatrist and a therapist can help you. You posted having no prior physical or mental illness history, but you're having a lot of symptoms, your loss of your father is a major life event that certainly has an impact on how you feel, etc. A psychiatrist will first evaluate you to see if there are any physical conditions causing your symptoms. If nothing physical is indicated, then they will do a full psychiatric evaluation to diagnose your condition and create a treatment plan.
A therapist can help you with emotional support, coping techniques, grief process, smoking cessation, anger management, etc. The two of them will be your treatment team.
Getting a psychiatrist and a therapist will be your best bet, IMO. I think they collectively can be extremely helpful based on your post. Obviously, I can't diagnose.
Of course, if there is a physical cause for a symptom(s)....your psychiatrist will give you a referral to a specialist (neurologist, for example). I really think you should see a psychiatrist ASAP and they can additionally get you a good therapist.
Drinking will make it worse. It's common to self-medicate. But it will make you feel worse, really. No judging.
I disagree with the above advice to see a GP instead of a psychiatrist. GPs have very little qualifications for what you're describing. I do not think a GP can adequately treat you.
Love yet violence, is yet love. I love you.