Are you trying to learn how to pronounce "culture" correctly in English? As a native speaker, I can tell you that it is not as tricky as it may seem.
The first syllable of the word is pronounced as "cul" and should be short and crisp. The "t" sound is followed by a slight pause and then the remaining two syllables are spoken together as "chah". The emphasis should be placed on the first syllable.
So if you want to practice, say it out loud with me: "cul-ture".
You may also hear native speakers pronouncing the word as "kul-chah", which is also correct.
To summarize, the correct way to say "culture" in English is either "cul-ture" or "kul-chah". Practice these two pronunciations with me and you'll be speaking like a native in no time!