There are many sad music. I only recommend some excellent ones to LZ. If necessary, you can continue to ask ~

The number one list of sad anime music is "Chao Ming" from CLANNAD BGM

The rest are "Here To Stay" from BGM

Barasuishou from Rose Girl BGM

Warm Heart from Rose Girl BGM

. Ninja BGM

Ninji VS Young Field comes from Naruto BGM

Tragedy の Truth comes from empty track BGM

Goddess, Thank you for your mercy BGM

Remembrance BGM

Thinking, Sleeping, Sleeping, Sleeping and Sleeping BGM

Lights Disappeared.