Your subtitle file is for a different cut of the film. Fix: Download a different subtitle file (check the “FPS” – frames per second). K.G.F was shot at 24fps, but some PAL conversions use 25fps.
.srt, .vtt
If you find the manual download and sync process too technical, your best option is to watch the film legally on a streaming platform that has professionally localized English subtitles. K.g.f Chapter 1 English Subtitles Download