Is the subtitle , or are you just unable to find the file? Do you need it in a specific language other than English?
If your file has a specific group name at the end (like GalaxyRG or EVO ), try to find a subtitle with that same tag. subtitle Single.All.the.Way.2021.720p.NF.WEB-DL...
If the text appears too early or too late, you can fix it manually in your player: Press G to delay the subtitle. Press H to speed up the subtitle. In MPC-HC: Use F1 and F2 to adjust timing. Is the subtitle , or are you just unable to find the file