Why? 0.0 stop trying to avoid the problem! Whining will not improve your situation.

Whining? Venting isn't whining. It's releasing your thoughts instead of keeping them inside and feel down all the time. You vent, then the listener suggests ways to improve, or you go to a counselor if things are drastic. Otherwise, be active and go out talking to people.

"Whining" is cathartic. Also, a lot of what people call "whining" is seeking companionship and advice. Actual whining is excessive complaining over minor matters. Feeling like a loser and feeling rejected is not a minor matter, and the OP's dad is quite the arse.

Not everyone is good at making friends. Starting up small talk also isn't the easiest thing is the world, and "just say[ing] hey" to people isn't easy either. It also sounds like the OP HAS tried to make friends, several times. But if the OP is in high school or lives in a small community or town, then they have to deal with cliques- and if there isn't a clique that has similar interests at their location, or the OP's interests are shamed where they are, it makes it even more difficult. There's also the chance of rejection, even if OP tries to be friendly, which can be seriously harmful, especially if the OP has social anxiety issues or something similar. For all you know, he could be a victim of harassment from the people in his location, and once someone becomes a target, bystanders are even less likely to want anything to do with someone. They worry about becoming a target themselves, and tell themselves it isn't their problem. So instead of assuming the OP somehow deserves being ignored by his own father for a drug, you could actually try to have some empathy.