Since you are looking for the "complete feature" subtitles for this specific BluRay release, you can find the verified SRT files on major subtitle repositories:
: While primarily for YTS releases, their BluRay subtitles are usually compatible with other H264 BluRay rips like yours. How to use the subtitle file: Download the .srt file from one of the sites above. subtitle Made.in.Italy.2020.1080p.BluRay.H264.A...
the video using a player like VLC Media Player , and it should load the subtitles automatically. Since you are looking for the "complete feature"
: Generally the best source for various languages. Look for the version that specifically mentions "BluRay" or "RARBG" in the title to ensure the timing matches your video file. : Generally the best source for various languages
: Offers a wide range of community-uploaded subtitles. You can filter by the "1080p.BluRay" tag to find the exact sync.