I believe I do OK when it comes to welding, but not to long ago I was not happy with my welds using my mig. I took it to have it check out and the guy said I was using the wrong wire for the way the welder polarity was set, on a 208 / 230 1ph welded.
I didn't know that you have options on a 1ph welder.
Check and make sure the polarity is set right.
Flux core wire has a different setting than non flux core wire using gas shielded.
At least when I got to welding again, what a difference.