I had an argument with a close friend over the phone I lost my temper and yelled at my friend. however we are no longer in good terms now. We do not speak to each other anymore and there’s no way we can. I am losing sleep over the fact that I should apologize but unfortunately I’m blocked from all social media platforms. Since my rude behaviour has resulted in regret and alot of remorse. How do I seek forgiveness? How will I know of Allah has forgiven me.