Converting a Java Edition mod (.jar) to a Bedrock Edition addon (.mcaddon) is a complex process because the two versions of Minecraft use entirely different coding languages (Java vs. C++) and engine architectures.
bridge. or the official Minecraft Add-Ons VSCode extension to compile the project into an .mcaddon.This is where most conversions fail. You cannot copy Java code. Instead, you re-implement features using Bedrock's components.
Don't convert everything at once. Start with: