Something that seems to be useful is learning how to tell stories well. It doesn't matter so much about what you're talking about, if you learn to deliver them in a way that gets people really engaged. Lots of stuff on YouTube for that.
Also on the kindness thing, it's great that you're kind and can carry a conversation! But of course it takes more than that to be friends with someone - things like actively wanting to spend time together, keeping in touch, loyalty etc all factor in as well. x