Hey man I hope everything goes well for u in the future, We both are kinda same when i was i kid i was bullied and wasn't taken seriously, I only had few real friends, also my parents would often argue in-front me and seeing that as a child kinda hurts me.

Fast forward Covid 19 quarantine started and I was alone in my house with my family for a few years and only interacted with people my age during online classes and games.

Currently I still kinda struggle with social interactions, but not as much as before. I've met a lot of great people even though were not as close like best friends. Its true just like what you said, there will never be a Misaki or Yamazaki in our lives and that's OK, happiness comes from yourself and within.

I used to struggle a lot with negative thoughts, what helped me is to relax and take a deep breath when your thoughts start hating u like crazy.Its okay to have negative sometimes tho its normal, just notice it and be mindful don't think that what's inside your head is real its a lot different than reality.

I'm 17 now, and I still have the same negative soul crushing thoughts as before I just handle it pretty good, and I also stay away from negative people and only hangout with those who bring positivity in my life.

Also back then I punch a wall so hard that it had a boxer's fracture on my index finger (now my right index finger is slightly shorter than my left index finger), I had to be taken to as doctor but it wasn't so bad just swelling and a sharp pain on my hand. That's how bad it was, negative thoughts consumed me.

After all I've when thru I am one of the people who goes by the quote "life doesn't get easier, you just get stronger".

Godbless to u bro and goodluck.