Salam.
It would be easier if you knew the Arabic alphabets and the Arabic vocabulary.
For example, you said 'Katabana'
If you break it down, it would be 'ka', 'ta', 'ba', 'na'.
But in Arabic, 'ka' could mean either 'Kaf' ك or 'Qaf' ق
The 'ta' could be 'ta' ت , or 'ta' ط
But if you already knew the Arabic vocabulary, you wouldn't have this problem.
The Arabic vocabulary helps you identify the Arabic alphabets in the word, and the Arabic alphabets helps in the pronunciation of the word.