I don't think you should ask for an apology, mainly because he doesn't really deserve to be anywhere near anyone, especially near anyone who seems really in-touch with emotions as yourself. I know it is difficult for you to get over being told that you're worthless and how it haunts anyone really after being told such horrid things, but for this emotion of feeling trapped by words and actions, I recommend art or some form of release through creative means. Maybe something abstract like a Jackson Pollock-style painting or something more 'physical' (with characters or words) to describe your feelings. I'd also recommend maybe seeking help for some of those more repeating negative thoughts and feelings. If you still attend school, a school counselor could teach you some coping skills and help you lift some weight off your chest from the burden of negative emotions. If you don't attend school, perhaps try a friend or go see an actual counselor (if money is an issue, almost all mental health clinics arrange for payment arrangements) to help you. You aren't alone, I promise.
For finding friends, it really depends on what you want. For offline friendships, I'd stay here and chat as this community seems pretty nice to me. ROBLOX is a good place to find friends (though more game pals than long-term) and the forums are a blast too. If you're a gamer, try those communities and forums and I assure you that you'll find companionship. I think also there are a few more Furry Forums, along with one made for teenage furries if that is something that interests you. For something offline, I'd start checking the paper/social media for parties or events. Facebook has an events feature that will show you all events in your local area, and I've personally benefitted from this myself. That would be a great way to latch onto a group in real life. Sports, after-school clubs, memberships to places can also help form bonds with a group of people. Honestly, there are abundant choices when it comes to friends, just find your calling and go. You'll do great.
I know that it feels like you're 'cursed' since you can't get ahead in life, but don't bully yourself like that. Knock harder and make the world hear you, don't just give up. Make the world know who you are and make those other people realize the faults they've committed. It's not impossible.
And as for the oppression thing, screw them. Honestly. Anyone can be lonely or sad, not just minorities or something. You have every right to your feelings and opinions, every single right.
If you need someone to talk with you more, I'm here. I'll help you the best I can.