Student or Learner
can one tell how to improve spoken english in daily routine
The best way to improve is to practise with someone familiar or trusted. It doesn't matter what you say, just that you say it in English.
Another strategy is to construst written phrases you use frequently and practise them so that when you need to use them, they are familiar and you can feel more confident.
Repeat the phrases and correct yourself when you hear something unusual in your speech.