esta
Y por qué si yo era tan bueno toa' esta mierda tú me hiciste (-ciste)
ehs-tah
This
And why, if I was so good, did you do all this shit to me?
This; used to indicate a person, thing, idea, state, event, time, remark, etc., as present, near, just mentioned or pointed out, supposed to be understood, or by way of emphasis