Map Error

Hello, I'm Stan Razvan Valentin, I'm twelve years old and I'm from Romania.
30 minutes ago I went to Minecraft to work and see that I no longer have a map I did nothing and it disappeared, please solve the problem because that folder is a joy for me and the fact that I started in June 21, 2020, I'm crying now.
The map is called "I don't know".

Răzvan, Optifine 1.16.4.

Please help me because I want to continue my work. I am twelve years old and I want you to help me, please.

Please help me please
This time I bought Minecraft, please tell me from the bottom of my heart, so once again, I'm twelve years old and you don't go like that with a comment that says the game is pirated. It's absurd.

Please