A part of my purpose.

I am an actor and I need to leave of Spain to find a job. Regrettably, I don't have too many opportunities in my professional area here. Thus, I must develop excellent get a remarkable pronunciation. I love sports and obviously the theatre and the cinema. :)

(Honestly: 'develop excellent pronunciation' is only one of many options, here; I was trying to find one that had as close as possible a meaning as to yours, and which sounds a bit more native. You could also say 'improve my pronunciation', 'learn excellent pronunciation', and others. What you had is grammatically correct, and conveys the meaning, but a native speaker wouldn't generally use such a phrase.)

My future objective:

I am an actor and I need to leave Spain in order to find a job. Regrettably, I dont have  many opportunities in my profession here. Therefore, I must have good pronunciation in english. I love sports and obviously theatre and cinema. :)