how to speak english like a native speakers? Please help?

Start by studying the vowels and trying to get those accurate.
Then try to get the glides right.
Look up what vowels and glides are on the internet and find a guide to phonetic pronunciation, then you will have all the information you need.
Intonation you'll pick up as you go along, a bit like everyone copying the aussie accent these days, with enough TV you'll catch it like a bug.
Speech therapists don't give advice on this in the UK because it is not a medical problem.