Translation of "Lousy" in Japanese

Behind this lousy player were three of his friends,

この超下手なプレイヤーの後ろに ３人の友達が立って

I expect it's his lousy personality that drives off the ladies.

こいつの性根が悪いから非モテなんだろ。

It is lame, it is lousy, and it is selfish, and it still works."

出来が悪くて お粗末で わがままだけど なんとか機能してるってわけだ」