Surface mount soldering - pins won't attach to pads
For that kind of connector, USB-C dual row, you really need a stencil and some solder paste if you expect this to work.  It's not enough to tin the pads and press down. I'd also suggest a pre-heater underneath if you have one.  A stencil can be had for as little as $20 but you need the artwork to send to them.  You could build the footprint from the datasheet easily enough and send it off to them.  Then just apply the solder paste through the stencil, place your connector carefully, and reflow.