All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
The solution to the problem that you are suffering from lies – after seeking the help of Allah Almighty – in two matters:
The first: To learn the recitation of the Quran on the hands of a skilled Shaykh who will correct for you the mistakes that you make and the words that you mispronounce.
The second: To strive to be attentive with your heart when reciting and focus on the words that you are reading, because distraction of the mind is a cause of error when reciting.
May Allah enable you to do acts of goodness.
Allah knows best.