I've been fishing for a long time but I can't catch it Neptne's Bounty

Here are the mods I installed
Doesn't matter if it's solo or server
Also try with enchanted book
Sorry, I use GOOGLE translation

Make sure you fish in "open water" (Google the definition, it's vanilla behaviour for all treasure).

確保你在“開闊水域”釣魚（谷歌定義，這是所有寶藏的普通行為）。

Does open water mean where there is no land in sight? Or just out to sea?

I've tried all kinds of waters and caught different kinds of fish
but i still don't see Neptne's Bounty

Out to sea would work, but it's not quite that difficult of a requirement.

You can read more about it here:
https://technical-minecraft.fandom.com/wiki/Fishing

出海是可行的，但要求並不那麼困難。

您可以在這裡閱讀更多相關信息： https ://technical-minecraft.fandom.com/wiki/Fishing

ok i'll try it out thank you!