This is what happens when I try to be social

Every time. :)

This is why I am the guy who focuses on the one who was interrupted and carry on with that conversation, then drag the group into it.

Yeah, same h-

You look at the person who interrupts you straight in the eyes as they talk on stolen time. Then you ask "are you done" when they seem finished. Then carry on with your conversational contribution. If they don't catch on, then you need to associate with people who have manners.

Story of my life

This happens to me a lot too, but it only happens when you're around people who don't respect you... maybe the reason so many of us are shy or having anxiety or depression issues because everyone else is just assholes

Yeah this happened to me. I got called random because when there was a lag in the conversation I would try to say what I had wanted to say. :/