You cannot upload external subtitles to streaming apps legally. However, Suits is currently on Peacock and Amazon Prime. You can use browser extensions like "Subtitle Viewer" to overlay text, but the native captions (usually CC) are excellent.
format) contributed by dedicated fans and professional translators: OpenSubtitles Suits Season 1 Subtitles English Download
Change the subtitle file name to exactly match the video file name. For example: You cannot upload external subtitles to streaming apps
If you have a legal subscription, you rarely need to download external files. Here is how to force English subtitles on major platforms: Suits Season 1 Subtitles English Download