Just keep trying man, there are many beautiful women in the world don't put all your eggs in one basket unless you find a lady that tickles your fanices

As for your previous text.

- Online seems to be most convenient for you as you have a lot of responsibility and not much time. Try to go on multiple dates (about 2-3) with each girl if you are looking for something long-term, if not try close things out on date 1 (less responses but all about what you want mate)

- Still do try and talk to people. Whether cold or warm or social circle at least talk to people and have a conversation. This is the only way you'll be better face to face. Cold approach is never starts off easy (hence it's called cold) but if you try you get used to it and it boosts your confidence the most

- In conversation i'm no pro but the famous quote "talk to a man about himself and he will listen for hours" comes to mind. This does not mean you don't talk or mention anything about yourself. It just means focus on what the other person enjoys and find out more about them. This will be the meat of your conversation.
She likes TV shows? talk about TV shows. She dreams to be an architect? find out why and relate if you can.

Whole point is don't stay on topics that are only about you as this bores people in general.

Hope this helps