Hi Jemmy! I'm a teacher here on italki and I can help you out with your speaking and pronunciations problem. ☺
I'll give you some pieces of advice: listen, listen and listen! If you want to speak like a native you must listen to the language and become familiar with the sounds and patterns of speech.
If this sounds good to you can book a trial lesson with me.
I hope I can be helpful to you. Have a nice day!😄🤗