Redstone mechanics differ between versions. Complicated Java contraptions may break or behave differently in Bedrock.
If your .jar mod is simple (e.g., adds a new sword, changes a recipe, or adds a simple block), do it yourself. convert jar to mcaddon free
A: As with any file conversion or tool usage, there are risks. Always prepare backups and use trusted sources. Redstone mechanics differ between versions
A: No, compatibility issues may prevent some mods from being converted. adds a new sword