problems with soldering

[GorillaMaxx360]

any kink works good that is small. I am not a pro at sodering but when i do soder i uses the really thin sodering for small wires and the thicker stuff (ehich as thick as pencil lead) for bigger wires seems to work for me but i might be using the wrong stuff and i dont even know it. It to have a plug in off brand sodering gun i like the plug in ones more than the gas cuz the gas runs out and the only disadvantage with the plug ins is the warm up time and i dont mind waiting but any sodering gun and anything between .5mm to like 3mm should be fine at least it works for me.