Minecraft Afk fishing not working?

I built a Minecraft fish farm in 1.16, unfortunately I only fish trash and fish (8 stacks of cod).

Does anyone have any idea why I'm not fishing treasures?

According to the wiki, every 20 catches should be a treasure…

I think they were annoyed. Heard that this shouldn't work anymore in later versions

Too bad was always so cool

This is because in 1.16 you have to fish in an ocean so that you can't randomly fish anywhere