Help me using sub sync as a beginner python

[mohamed136]

I'm new to python and github with CMD.
I already install ffsubsync but I don't what to do next
My video are MKV files and subtitles I use is SRT.

I'm watching anime in English dub, and my goal is to add subtitles to the video using whisper in Subtitles edit, but the problem is when i use some lines are accurate but other lines need to be fixed and I want to synchronize automatically and fast without I go through 20 minute each episode.

And i'm looking for a software can know which timestamp from start to end in each when characters say something that way I will put a subtitles with a new timing.

But if you think it doesn't work, then what should I do to achieve my goal?