Hasan, it is normal. People have different accents and ways to speak, describe, explain or tell something. Depending mostly on where they grew up. It is probably different than the way we all start to learn English from traditional academic schools which is good for sure, but in the real life only a small amount of people will talk like that to each other.

The fastest way to get used to understand native English speakers is to be patient and be surrounded by them on a everyday lifestyle for a while, then your understanding will improve its capacity. If you cannot travel for long time or work abroad then surround yourself by as much source as you can, practise everyday and consistently. Podcast, tv shows, courses, songs, language partner on Italki.. Everything that you can turn to an English source.