Sometimes, charisma is only good for messing up around. Each person is different and not all have to be bubbly and outgoing to enjoy true friendship. Many times you can connect with people because they have other attributes as being honest, being good people, trustworthy, a good listener.
Please, try to take it out of your mind that about you not having charisma. I’m sure you have lots of good qualities, only you can’t see them.

Maybe your problem is more about you being isolated and not having the opportunity to relate with other people.

I’m an introvert, social awkward, social phobic, full of insecurities but still I have a couple of people I can call true friends. It’s not easy being an introvert. I understand it. And these times we are living in seems to be hostile for many people to bound strong connections, because many people is so focussed on their own struggles and the demanding imposed by our current society that it seems we are less connected, we have less time and you know, too much engaged with our own matters.
Don’t lose hope.

My point in this thread is that each case is different. I made two strong online connections and I have been knowing one of this person for eleven years and another for five. We had have our arguments (I’m not an easy-going person) but in the end, they showed me how good persons they are.

The only thing that is different with people you know online is that if there isn’t a good friendship, it’s easier for the other person to cut you off by simply ignoring you or blocking you up. In the end, you are not gonna rush with this person in the street, at work or wherever.