Developing My English Speaking Skills

I take English lessons once a week. As usual l had one last Saturday and as usual I couldn't speak very well. Why does this happen every single time? How come I can't spit out what I really want to speak say? I have a lot to tell my teacher. I want to express myself, but I can't do it in a sentence. It's like I'm wandering in a maze...
くやしいーーーーー！！！

****I see only one correction in your entry and two in the title and some punctuation but it is fine the way it is written. I would say it exactly the way you have written it.

Developing English speaking skill

I take English lessons once a week. As usual l had one last Saturday, but I can't And as usual I couldn't speak very well yet. Why does this happen every single time? How come I can't can't I spit out what I really want to speak? I have a lot to tell to my teacher, I want to express myself, but I can't do it in a sentence. It's like I'm wandering in a maze...
くやしいーーーーー！！！