I don't think you did aything wrong. Bear in mind it takes more than a few discussions to form an aquaintanceship. Perhaps they just felt you didn't 'click' with them.

Consider - even jot down - what you are wanting to get out of this and what it will 'look like' when that clicking happens. So too do a self-evaluation and adjust your expections accordingly. I think you may find you have been selling yourself short.

Make a plan. Should you get that agreement for a get together, what too will the meeting look like. How do you intend to go about it. When? Where? How?