If your file has a specific group name at the end (like GalaxyRG or EVO ), try to find a subtitle with that same tag.
Once you download the .srt file, follow these steps to make it work: subtitle Single.All.the.Way.2021.720p.NF.WEB-DL...
Search for the movie title and filter by "WEB-DL" or "NF." If your file has a specific group name